> For the complete documentation index, see [llms.txt](https://guide.lorenext.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guide.lorenext.com/2nook/jiao-yi.md).

# Trade

## 📚 Complete Article Purchase Guide

### What is Article Purchase?

On our platform, purchasing an article actually means buying the Passcard NFT bound to that article. Once successfully purchased, you'll gain permanent reading access to the article while enjoying exclusive community benefits. This blockchain-based purchase model ensures that your reading rights truly belong to you.

#### 🌟 Core Advantages of Article Purchase

**Permanent Reading Rights**:

* ✅ Purchase once, read forever
* ✅ Platform-independent, true ownership of reading rights
* ✅ Cross-device synchronized reading support
* ✅ Continue reading even if author deletes the article

**Exclusive Community Benefits**:

* 🏛️ Access to author's exclusive forum
* 💬 Deep communication with authors and other readers
* 🎁 Enjoy exclusive benefits for Passcard holders
* ⭐ Priority access to author's latest work information

**Referral Reward System**:

* 💰 Using referral codes brings rewards to referrers
* 🤝 Build reading social networks
* 🎯 Discover more quality content and authors
* 📈 Participate in platform ecosystem building

#### 🎯 Types of Articles Worth Purchasing

**High-Value Content**

* **In-depth Research Reports**: Industry analysis, market insights
* **Professional Technical Tutorials**: Programming, design, investment guides
* **Exclusive Interviews**: Deep conversations with industry experts
* **Original Literary Works**: Novels, essays, poetry, etc.

**Limited Edition Content**

* **Author Manuscripts**: Creation process and thought records
* **Time-Limited Releases**: Content only purchasable during specific periods
* **Member Exclusives**: Content created for specific groups
* **Collaborative Works**: Premium content created by multiple authors

***

### 🛒 Detailed Purchase Process Guide

#### Discovering and Selecting Articles

**Step 1: Browse Articles**

1. **Browse on Platform Homepage**:
   * View recommended articles and trending content
   * Use search function to find topics of interest
   * Follow favorite authors for update notifications
   * Check article previews and descriptions
2. **Evaluate Article Value**:
   * Read article descriptions and table of contents
   * Check author background and previous works
   * Review other readers' ratings and feedback
   * Consider practical value of content for you

**Step 2: Understand Purchase Information**

1. **View Passcard Details**:

   ```
   📊 Passcard Information Display:

   Basic Information:
   ├── Token Address: 0x29...4068 (Contract Address)
   ├── Price: 0.1 USDT (Purchase Price)
   ├── Remaining: 196/200 (Remaining Quantity)
   └── Publisher: Author Information

   Purchase Benefits:
   ├── Permanent article reading rights
   ├── Exclusive community access
   ├── Priority author interaction
   └── Future benefit priority access
   ```
2. **Understand Scarcity**:
   * Check total supply and remaining quantity
   * Understand price trends and market performance
   * Consider collection and investment value
   * Evaluate future resale potential

#### Purchase Operation Steps

**Step 1: Prepare Wallet**

1. **Connect Wallet**:
   * Ensure wallet is connected to platform
   * Check wallet has sufficient USDT balance
   * Reserve enough Gas fees (ETH)
   * Confirm network settings are correct
2. **Balance Check**:
   * Purchase price + Gas fee estimate
   * Recommend reserving slightly more than needed
   * Understand current network congestion
   * Prepare for possible transaction wait times

<figure><img src="/files/azLlNxghFUHui2basE7W" alt=""><figcaption></figcaption></figure>

**Step 2: Click Purchase**

1. **Enter Purchase Page**:
   * Click "Buy Passcard from Publisher" button on article page
   * System displays purchase confirmation dialog
   * Shows detailed purchase information and price
2. **Enter Referral Code (Optional)**:

   ```
   🎯 Referral Code Usage Instructions:

   Referral Code Sources:
   ├── Friends' shared referral links
   ├── Referral codes on social media
   ├── Author-provided exclusive referral codes
   └── Referral codes from community activities

   Referral Rewards:
   ├── Referrer receives commission rewards
   ├── You may receive discounts or benefits
   ├── Build social connections
   └── Support quality content promotion
   ```

**Step 3: Confirm Purchase**

<div align="center" data-full-width="false"><figure><img src="/files/68ApgehM14wq6FVcyOIT" alt="" width="375"><figcaption></figcaption></figure></div>

<figure><img src="/files/8XvhNHaPnjI35OzmZtCI" alt="" width="375"><figcaption></figcaption></figure>

1. **Purchase Process Execution**:

   ```
   🔄 Purchase Execution Steps:

   ✅ Step 1: Approve (Authorization)
   ├── Authorize contract to use your USDT
   ├── Confirm authorization transaction in wallet
   ├── Wait for blockchain confirmation
   └── Usually takes 1-2 minutes

   ✅ Step 2: Buy Article (Purchase Article)
   ├── Execute actual purchase transaction
   ├── Pay article purchase fee
   ├── Wait for transaction confirmation
   └── Passcard transferred to your wallet

   ✅ Step 3: Send to API (Data Sync)
   ├── Sync purchase information to platform
   ├── Update your reading permissions
   ├── Activate community access rights
   └── Complete purchase process
   ```
2. **Transaction Confirmation**:
   * Confirm each step sequentially in wallet
   * Check if Gas fee settings are reasonable
   * Patiently wait for blockchain confirmation
   * Monitor purchase progress notifications

**Step 4: Purchase Complete**

1. **Receive Confirmation**:
   * Receive purchase success notification
   * Passcard NFT appears in your wallet
   * Gain complete article reading access
   * Activate exclusive community access
2. **Enjoy Benefits**:
   * Start reading complete article immediately
   * Join author's exclusive discussion community
   * Save article to personal bookshelf
   * Follow updates and benefits

***

### 📖 Bookshelf Management and Reading Experience

<figure><img src="/files/2T2aJuHxGgOlz6XXB1Om" alt=""><figcaption></figcaption></figure>

#### Accessing Personal Bookshelf

**Entering Bookshelf Page**

1. **Access Paths**:
   * **Test Environment**: <https://test.readfill.com/account/bookshelves>
   * **Production Environment**: <https://www.readfill.com/account/bookshelves>
   * Or access through personal center navigation
2. **Bookshelf Interface Functions**:

   ```
   📚 Personal Bookshelf Features:

   Article Management:
   ├── View all purchased articles
   ├── Sort by purchase time
   ├── Browse by author categories
   └── Search for specific articles

   Reading Tools:
   ├── One-click continue reading
   ├── Reading progress sync
   ├── Bookmark and note functions
   └── Reading history records

   Social Features:
   ├── Share reading thoughts
   ├── Rate and review
   ├── Recommend to friends
   └── Join discussion communities
   ```

#### Article Reading Experience

<figure><img src="/files/Ek3LfqJVL9Lj02Uq9fJf" alt=""><figcaption></figcaption></figure>

**Reading Interface Functions**

1. **Reading Toolbar**:
   * **Font Settings**: Adjust font size and style
   * **Theme Switch**: Day mode, night mode
   * **Reading Progress**: Display reading percentage
   * **Table of Contents**: Quick jump to specific chapters
2. **Interactive Features**:

   ```
   💬 Reading Interaction Options:

   Personal Functions:
   ├── Add bookmarks to mark important paragraphs
   ├── Write reading notes and insights
   ├── Highlight important content
   └── Share exciting paragraphs

   Social Functions:
   ├── View other readers' comments
   ├── Like quality comments
   ├── Participate in paragraph discussions
   └── @ author for Q&A interaction

   Community Benefits:
   ├── Enter exclusive forums
   ├── Direct communication with authors
   ├── Participate in fan activities
   └── Get exclusive benefits
   ```

**Multi-Device Sync**

1. **Cross-Device Access**:
   * Seamless switching between phone, tablet, computer
   * Auto-sync reading progress
   * Cloud save notes and bookmarks
   * Offline download support
2. **Reading Experience Optimization**:
   * Responsive design adapts to various screens
   * Fast loading and smooth page turning
   * Eye protection mode and reading comfort
   * Personalized recommendations for related articles

***

### 🎁 Referral Code System Details

#### How Referral Codes Work

**Benefits for Referrers**

1. **Reward Mechanism**:

   ```
   💰 Referral Reward Structure:

   Commission Rewards:
   ├── Receive 5-15% commission of purchase amount
   ├── Extra rewards for reaching certain referral milestones
   ├── Long-term referrers enjoy higher percentages
   └── Rewards directly sent to wallet

   Social Value:
   ├── Build reader network and influence
   ├── Get recognition for promoting quality content
   ├── Establish connections with referred users
   └── Become community opinion leader
   ```
2. **Referral Strategies**:
   * Choose quality content you truly endorse
   * Share referral links on social media
   * Write recommendation articles explaining value
   * Build personal recommendation brand

**Benefits for Referred Users**

1. **Possible Discounts**:
   * May receive purchase discounts in some cases
   * Referrer may provide additional benefits
   * Build social connection with referrer
   * Get more quality content recommendations
2. **Social Value**:
   * Join referrer's reading circle
   * Get help with content discovery and filtering
   * Participate in richer discussions and exchanges
   * Expand personal reading and social networks

#### Obtaining and Using Referral Codes

**How to Get Referral Codes**

1. **Official Channels**:
   * Referral codes shared by authors on social media
   * Platform promotional activities
   * Community activities and contest rewards
   * Invitation links from existing users
2. **Social Channels**:
   * Recommendations from friends and colleagues
   * Shares on social media
   * Related forums and communities
   * KOL and opinion leader recommendations

**Tips for Using Referral Codes**

1. **Verify Referral Codes**:
   * Confirm reliable source of referral code
   * Understand referrer's background and credibility
   * Check if there's an expiration date
   * Ask about additional benefits
2. **Maximize Benefits**:
   * Compare advantages of different referral codes
   * Choose referrers who can provide more value
   * Build long-term referral relationships
   * Actively participate in referrer's community

***

### 💡 Purchase Strategies and Best Practices

#### Content Value Assessment

**Evaluating Article Quality**

1. **Content Dimensions**:

   ```
   📊 Article Value Assessment Standards:

   Content Quality:
   ├── Accuracy and timeliness of information
   ├── Depth and uniqueness of content
   ├── Logical structure and clarity of expression
   └── Practical value and actionability

   Author Authority:
   ├── Author's experience in relevant field
   ├── Quality and response of previous works
   ├── Industry recognition and influence
   └── Continuous creation ability and frequency

   Market Performance:
   ├── Other readers' reviews and feedback
   ├── Passcard sales performance
   ├── Secondary market price performance
   └── Community discussion activity
   ```
2. **Investment Value Considerations**:
   * Long-term value and relevance of content
   * Scarcity and collectible value of Passcard
   * Author's future development potential
   * Community value and network effects

**Purchase Timing Selection**

1. **Price Considerations**:
   * Early purchases usually have lower prices
   * Watch for limited-time offers and promotions
   * Consider Gas fee fluctuations
   * Evaluate future price increase possibilities
2. **Demand Matching**:
   * Confirm content meets current learning needs
   * Consider reading time and energy arrangement
   * Evaluate complementarity with other content
   * Balance purchase budget and expected returns

#### Maximizing Reading Effectiveness

**Efficient Reading Strategies**

1. **Reading Planning**:
   * Create reading plans and time schedules
   * Set reading goals and expected gains
   * Prepare relevant background knowledge
   * Choose appropriate reading environment
2. **Deep Learning Methods**:

   ```
   📖 Deep Reading Techniques:

   Active Reading:
   ├── Think while reading, ask questions
   ├── Take notes of important viewpoints
   ├── Summarize core content of each chapter
   └── Connect with your own experience

   Interactive Learning:
   ├── Participate in article comments and discussions
   ├── Ask questions and communicate with authors
   ├── Share reading thoughts and insights
   └── Exchange viewpoints with other readers

   Practical Application:
   ├── Apply learned knowledge to practice
   ├── Create action plans and goals
   ├── Track implementation effects and improvements
   └── Share practical experience and results
   ```

**Community Participation Strategies**

1. **Active Discussion Participation**:
   * Express viewpoints and opinions in exclusive forums
   * Respond to other readers' questions and discussions
   * Share related resources and links
   * Organize or participate in related activities
2. **Build Social Networks**:
   * Follow like-minded readers
   * Establish study groups or discussion groups
   * Participate in author's offline activities
   * Recommend quality content to friends

***

### 🔧 Technical Support and Troubleshooting

#### Common Purchase Issues

**Wallet Connection Problems**

1. **Connection Failures**:

   ```
   🔧 Wallet Connection Troubleshooting:

   Basic Checks:
   ├── Confirm wallet plugin is installed and enabled
   ├── Check if browser supports Web3
   ├── Clear browser cache and cookies
   └── Try refreshing page and reconnecting

   Network Settings:
   ├── Confirm wallet network settings are correct
   ├── Check if connected to the right chain
   ├── Verify RPC node connection status
   └── Try switching networks and reconnecting

   Permission Issues:
   ├── Check if wallet authorizes website access
   ├── Confirm account is not locked
   ├── Verify sufficient permissions
   └── Try re-authorizing connection
   ```
2. **Insufficient Balance**:
   * Check if USDT balance is enough for article price
   * Confirm ETH balance is enough for Gas fees
   * Consider Gas fee increases during network congestion
   * Top up in time and wait for confirmation

**Transaction Execution Problems**

1. **Transaction Failures**:
   * Check if Gas fee setting is too low
   * Confirm no duplicate submissions of same transaction
   * Wait for network congestion to ease and retry
   * Contact customer service for technical support
2. **Stuck Transactions**:
   * Check transaction status on blockchain explorer
   * Consider speeding up transaction or canceling and resending
   * Wait longer for natural transaction confirmation
   * Avoid transactions during network congestion

#### Reading Access Issues

**Permission Verification Problems**

1. **Cannot Access Purchased Articles**:
   * Confirm Passcard NFT is in currently connected wallet
   * Check if wallet connection status is normal
   * Try refreshing page to re-verify permissions
   * Confirm purchase transaction is fully confirmed
2. **Bookshelf Display Issues**:
   * Wait for data sync completion (may take several minutes)
   * Clear browser cache and reload
   * Check if network connection is stable
   * Try accessing from different devices

**Reading Experience Issues**

1. **Slow Page Loading**:
   * Check network connection speed
   * Close other bandwidth-consuming applications
   * Try using different browsers
   * Wait for server load to decrease
2. **Feature Malfunctions**:
   * Update browser to latest version
   * Disable potentially conflicting browser plugins
   * Clear website data and re-login
   * Contact technical support for help

***

### 📱 Mobile Usage Guide

#### Mobile Purchase Process

**Mobile Wallet Setup**

1. **Wallet App Preparation**:
   * Download and install supported mobile wallet apps
   * Import or create wallet accounts
   * Backup mnemonic phrases and private keys
   * Top up sufficient USDT and ETH
2. **Browser Configuration**:

   ```
   📱 Mobile Browser Configuration:

   Recommended Browsers:
   ├── Wallet built-in browser (like MetaMask browser)
   ├── Chrome mobile version
   ├── Firefox mobile version
   └── Safari (iOS)

   Optimization Settings:
   ├── Enable JavaScript support
   ├── Allow popups and redirects
   ├── Clear cache and cookies
   └── Disable ad blocking plugins
   ```

**Mobile Purchase Operations**

1. **Access and Purchase**:
   * Open article page in mobile browser
   * Connect mobile wallet to website
   * Complete transaction following purchase process
   * Confirm execution of each step
2. **Interaction Optimization**:
   * Use landscape mode for better experience
   * Ensure stable network connection
   * Avoid switching apps during transactions
   * Keep phone battery sufficient

#### Mobile Reading Experience

**Reading Interface Adaptation**

1. **Interface Optimization**:
   * Responsive design auto-adapts to screen
   * Touch-friendly operation buttons
   * Gesture support for swipe page turning
   * Auto-adjust fonts and line spacing
2. **Feature Characteristics**:

   ```
   📖 Mobile Reading Features:

   Basic Functions:
   ├── Touch zoom to adjust font size
   ├── Left-right swipe to switch pages
   ├── Long press to select and copy text
   └── Double-tap to quickly return to top

   Advanced Functions:
   ├── Voice reading support
   ├── Offline download and caching
   ├── Auto night mode switching
   └── Cloud reading progress sync

   Social Functions:
   ├── One-click sharing to social media
   ├── Screenshot sharing of exciting paragraphs
   ├── Voice comments and interactions
   └── Community discussion participation
   ```

**Performance Optimization Recommendations**

1. **Network and Storage**:
   * Use WiFi network for better experience
   * Regularly clear app cache
   * Ensure sufficient storage space
   * Update app versions promptly
2. **Battery and Performance**:
   * Read for extended periods while charging
   * Close unnecessary background apps
   * Lower screen brightness to save battery
   * Use power saving mode to extend battery life

***

### ❓ Frequently Asked Questions

#### Purchase Related Questions

**Q: Can I get a refund after purchase?** A: Due to the irreversible nature of blockchain transactions, refunds are generally not supported. However, if you encounter technical issues causing purchase failures, we will provide appropriate solutions.

**Q: Do referral codes have expiration dates?** A: The validity period of referral codes depends on the publisher's settings. We recommend using referral codes promptly after receiving them to avoid expiration.

**Q: Can I resell purchased Passcards?** A: Yes, Passcards as NFTs can be resold on supported markets, but you will lose article reading access after resale.

**Q: What if purchase fails but I'm charged?** A: If you encounter transaction failure but funds are deducted, please save the transaction hash and contact customer service for assistance.

#### Reading Related Questions

**Q: Can't find purchased articles in bookshelf?** A: Please check:

1. If wallet connection status is normal
2. If using the same wallet address as when purchasing
3. Wait for data sync completion (usually 5-10 minutes)
4. Refresh page or reconnect wallet

**Q: Can I read on multiple devices?** A: Yes, as long as you log in with the same wallet account, you can read purchased articles on any device.

**Q: Will reading progress sync?** A: Yes, reading progress, bookmarks, and notes will sync in the cloud, supporting seamless cross-device reading.

#### Technical Related Questions

**Q: Which wallets are supported?** A: Supports mainstream Web3 wallets including MetaMask, WalletConnect, Coinbase Wallet, etc.

**Q: Which blockchain network is used?** A: Currently mainly on Ethereum network, with future support for more Layer2 and other compatible networks.

**Q: How much Gas fee is needed?** A: Gas fees depend on network congestion, usually between $5-20. Recommend transacting during low network activity.

***

### 📞 Getting Help and Support

#### Customer Service Channels

**Online Customer Service**

* **Live Chat**: Customer service button at bottom right of website
* **Business Hours**: 9:00-21:00 (GMT+8)
* **Response Time**: Usually reply within 5 minutes
* **Supported Languages**: Chinese, English

**Email Support**

* **Purchase Issues**: <purchase-support@readfill.com>
* **Technical Issues**: <tech-support@readfill.com>
* **Account Issues**: <account-support@readfill.com>
* **General Inquiries**: <info@readfill.com>

#### Community Support

**User Community**

* **Official Forum**: Get user mutual assistance and experience sharing
* **Telegram Groups**: Real-time discussion and quick answers
* **Discord Channels**: In-depth technical discussion and feedback
* **WeChat Groups**: Exclusive communication space for Chinese users

**Learning Resources**

* **Help Documentation**: complete.readfill.com/docs
* **Video Tutorials**: Official channels on Bilibili and YouTube
* **FAQ**: Regularly updated FAQ page
* **Best Practices**: User experience sharing and cases

#### Feedback and Suggestions

**Product Feedback**

* **Feature Suggestions**: <feature-request@readfill.com>
* **Bug Reports**: <bug-report@readfill.com>
* **User Experience**: <ux-feedback@readfill.com>
* **Content Suggestions**: <content-feedback@readfill.com>

**Participate in Improvements**

* **Beta Testing**: Participate in new feature testing
* **User Research**: Participate in product research and interviews
* **Community Contribution**: Help other users solve problems
* **Content Recommendations**: Recommend quality authors and content

***

### 🎉 Start Your Reading Journey

#### Quick Start for New Users

**5-Minute Quick Purchase**

1. **Prepare Wallet**: Install MetaMask and top up
2. **Browse Content**: Choose articles of interest
3. **Connect Wallet**: Connect your wallet on the website
4. **Complete Purchase**: Follow instructions to complete purchase process
5. **Start Reading**: Find articles in bookshelf and start reading

**Fully Utilize Benefits**

1. **Deep Reading**: Make full use of permanent reading rights
2. **Community Participation**: Join author's exclusive forum for communication
3. **Referral Sharing**: Use referral codes to invite friends
4. **Continuous Learning**: Follow author updates and new works

#### Building Reading Habits

**Long-term Value Maximization**

1. **Build Reading Plans**: Create systematic learning plans
2. **Active Discussion Participation**: Share viewpoints and insights in community
3. **Apply Knowledge**: Apply reading gains to practice
4. **Expand Reading Network**: Discover more quality content through recommendations

**Become Community Contributor**

1. **Share Reading Thoughts**: Write valuable reviews and recommendations
2. **Help New Users**: Answer newbie questions in community
3. **Promote Quality Content**: Share good articles using referral codes
4. **Participate in Platform Building**: Provide feedback and improvement suggestions

***

*Start exploring infinite possibilities of knowledge. Every purchase is an investment in quality content and your own growth. Let's build a better Web3 reading ecosystem together!*
