Hello, when depositing fiat currency, you need to provide proof of legal income.

Common proof documents include:

• Employment Contract: Showing your employment relationship and source of income.
• Tax Certificate: Such as recent tax returns, proving that your income has been taxed according to law.
• Brokerage Withdrawal Records: Screenshots showing your fund withdrawal records from securities accounts.

Please provide the appropriate proof documents based on your actual situation to ensure the legality of your fund sources.