I. Introduction
The system is a comprehensive financial trading platform, designed to provide users with one-stop investment and financial services. The platform covers many aspects such as stock trading (including Korean stocks and American stocks), virtual currency trading and personal financial management, and strives to meet the investment needs of different users.

Ii. Main features:
1. Home page: As the first interface for users to enter the system, the home page provides the latest announcement information, quick access to hot stocks (such as Samsung Electronics, Nike, etc.), and supports the limited price commission trading operation.
2. Virtual currency: For cryptocurrency investors, the platform provides a rich list of virtual currencies and detailed information inquiries about mainstream digital currencies such as bitcoin. Users can place buy or sell limit orders here.
3. My focus: Allow users to customize their portfolios and track the stocks and virtual currencies they are interested in. Users can add or remove concerns by editing options.
4, My wallet: manage the user's account funds, support balance withdrawal, recharge and other functions, and can view the transaction records of the wallet. In addition, it also provides bank card management and online recharge services.
5. My Orders and completed orders: Users can view and manage the status of their orders, including cancelling uncompleted orders and viewing the history of transactions.
6, Language and about us: provide language choice and company profile and other relevant information.
7, menu bar: According to whether the user login status display different options, such as login/logout, retrieve the user ID.
8, password recovery and registration process: to provide help for users who forget their passwords, and guide new users to complete the registration process.
9, Modify personal information: Allow users to update their personal information, ensure account security and personal preferences.


Three、Functional Node Structure:

1. Home Page
   1.1 Announcements
      1.1.1 Announcement Details
   1.2 Korean Stocks
      1.2.1 Search Results
         1.2.1.1 Search Result 1
         1.2.1.2 Search Result 2
      1.2.2 Samsung Electronics
         1.2.2.1 Samsung Electronics Table 1
         1.2.2.2 Samsung Electronics Table 2
         1.2.2.3 Samsung Electronics Table 3
   1.3 Buy Limit Order
      1.3.1 Transaction Type Selection
      1.3.2 Leverage Confirmation
      1.3.3 Order Confirmation
      1.3.4 Enter Trading Password
      1.3.5 Order Success Notification
   1.4 Sell Limit Order
      1.4.1 Transaction Type Selection
      1.4.2 Leverage Confirmation
      1.4.3 Order Confirmation
      1.4.4 Enter Trading Password
      1.4.5 Order Success Notification
   1.5 U.S. Stocks
      1.5.1 Nike Electronics
         1.5.1.1 Nike Electronics Table 1
         1.5.1.2 Nike Electronics Table 2
         1.5.1.3 Nike Electronics Table 3
   1.6 Buy Limit Order
      1.6.1 Transaction Type Selection
      1.6.2 Leverage Confirmation
      1.6.3 Order Confirmation
      1.6.4 Enter Trading Password
      1.6.5 Order Success Notification
   1.7 Sell Limit Order
      1.7.1 Transaction Type Selection
      1.7.2 Leverage Confirmation
      1.7.3 Order Confirmation
      1.7.4 Enter Trading Password
      1.7.5 Order Success Notification

2. Cryptocurrency
   2.1 Cryptocurrency List
   2.2 More Cryptocurrencies
      2.2.1 No Search Record Prompt
      2.2.2 Search Results
         2.2.2.1 Search Result 1
         2.2.2.2 Search Result 2
   2.3 Bitcoin Electronics
      2.3.1 Bitcoin Electronics Table 1
      2.3.2 Bitcoin Electronics Table 2
      2.3.3 Bitcoin Electronics Table 3
      2.3.4 Unfollow Button
   2.4 Buy Limit Order
      2.4.1 Transaction Type Selection
      2.4.2 Leverage Confirmation
      2.4.3 Order Confirmation
      2.4.4 Enter Trading Password
      2.4.5 Order Success Notification
   2.5 Sell Limit Order
      2.5.1 Transaction Type Selection
      2.5.2 Leverage Confirmation
      2.5.3 Order Confirmation
      2.5.4 Enter Trading Password
      2.5.5 Order Success Notification

3. My Follows
   3.1 Stock List
      3.1.1 Edit Options
         3.1.1.1 Edit 1
         3.1.1.2 Edit 2
   3.2 Cryptocurrency List
      3.2.1 Edit Options
         3.2.1.1 Edit 1
         3.2.1.2 Edit 2

4. My Wallet
   4.1 Withdraw Balance
      4.1.1 Enter Trading Password
      4.1.2 Submission Success Notification
   4.2 Deposit Popup
   4.3 Deposit Balance
      4.3.1 Enter Trading Password
      4.3.2 Deposit Success Notification
   4.4 Deposit Cryptocurrency
   4.5 Online Deposit
   4.6 Wallet History
      4.6.1 Wallet Record 1
      4.6.2 Trading Password
      4.6.3 Bank Card
         4.6.3.1 Edit Bank Card—None
         4.6.3.2 Edit Bank Card Prompt
         4.6.3.3 Delete Prompt
         4.6.3.4 Add Bank Card

5. My Pending Orders
   5.1 Cancel Order Prompt

6. My Filled Orders
   6.1 Exit Membership Prompt

7. Language
   7.1 About Us

8. Menu
   8.1 Logged In—Logout
      8.1.1 Logout Prompt
   8.2 Not Logged In—Login
      8.2.1 Not Entered
      8.2.2 Entered
      8.2.3 Error Prompt
   8.3 Retrieve User ID 1
   8.4 Retrieve User ID 2

9. Password Recovery
   9.1 Recover Password
   9.2 Reset Password
      9.2.1 Mismatch Prompt

10. Terms of Agreement
    10.1 Personal Information Handling Policy

11. Registration
    11.1 Not Entered
    11.2 Password Mismatch
    11.3 Enter Verification Code
    11.4 Verification Complete
    11.5 Membership Registration Complete

12. Modify Personal Information
    12.1 Password Mismatch
    12.2 Enter Verification Code