I. Three Core Solutions for Domestic Access Platforms in 2025#
1.1 Official Domain Direct Connection (Recommended)#
Manually enter https://ouyijoin.com for direct access, which is the safest and most reliable official entry method.
II. Device-Specific Download and Installation Tutorial (2025 Latest Version)#
2.1 Android Users: Bypass System Restrictions for Installation#
Step 1: Obtain Installation Package
Visit the official website of 欧易, register, and download the APK file.
Step 2: Permission Settings
Go to "Settings" → "Application Management" → "Special Application Permissions" → "Install Unknown Apps," and grant the browser installation permissions.
Step 3: Complete Installation
Click on the APK file to install; the first launch requires authorization for necessary permissions such as network and storage.
2.2 iOS Users: Overseas Apple ID Practical Guide#
| Step | Operation Description |
|---|---|
| Register Overseas ID | Select "Hong Kong" on the Apple official website, fill in the address of the University of Hong Kong, and choose "None" for payment method |
| Switch Account | Log out of the domestic Apple ID and log in with the newly registered overseas account |
| Search and Download | Search "OKX" in the App Store, with the developer displayed as "OKX MALTA LTD" indicating it is the official version |
| Usage Maintenance | After downloading, you can switch back to the domestic Apple ID without affecting the normal operation of the APP |
III. Real Name Authentication and Security Settings (2025 New Regulations)#
3.1 Account Registration (Complete in 3 Minutes)#
Step 1: Fill in Basic Information
Open the APP and click "Register," choose an email (recommended Gmail/Outlook) or +86 mobile number.
Step 2: Verification Code and Password
Enter the verification code and set a 12-character password that includes uppercase and lowercase letters, numbers, and symbols.
Step 3: Select Residence
Select "China" as your residence and read and check the user agreement.
IV. Full Process Analysis of Purchasing Digital Currency with RMB#
4.1 Fiat Currency Deposit (C2C Trading)#
Step 1: Enter Fiat Currency Account
After logging in, click "Assets" → "Fiat Currency Account," and choose to pay via Alipay/WeChat/bank card.
Step 2: Set Purchase Parameters
Enter the amount (suggest ≤1000 yuan for the first time), and the system will automatically match with zero negative feedback merchants.
Step 3: Complete Payment
When transferring, note the order's last digits, click "I have paid," and wait for the release of funds (usually completed within 5 minutes).
4.2 Purchase Mainstream Cryptocurrencies (Two Options)#
Option A: Flash Exchange Function (Zero Slippage)
Click "Flash Exchange" on the homepage, select "USDT to BTC/ETH"
Enter the purchase amount, real-time exchange rate settlement, and funds arrive instantly.
Option B: Spot Trading (Depth Priority)
Enter "Trading" → "BTC/USDT" trading pair
Choose "Market Order" for optimal price execution, or "Limit Order" to set your desired price
After the transaction, you can view your holdings in the "Funds Account."
V. Advanced Strategies for Asset Security Management#
5.1 Storage Solution Selection#
Short-term Holding: Enable the platform's "Multi-Signature Cold Wallet" feature (Path: Assets → Cold Wallet Custody)
Long-term Coin Storage: Use a hardware wallet (recommended Ledger Nano X), with the mnemonic phrase engraved on a titanium plate.
5.2 Risk Control Configuration#
Anti-Phishing Code: All official notifications contain a 6-digit exclusive verification code
Withdrawal Whitelist: Only allow transfers to pre-bound addresses
Password Update: Update the login password in the "Security Center" every 90 days.
Experience Now: https://ouyijoin.com Official Registration Entry