Operation steps:
1. **Enter Fund Log**
- Find the target user in the user list
- Click the "Fund Log" button
2. **View Operation History**
- The system displays all fund operation records of the user
- Including operation time, type, amount, balance, notes, etc.
3. **Filter Log**
- Filter by time range
- Filter by operation type
- Filter by amount range
Log information:
- **Operation time**: The specific time of fund operation
- **Operation type**: Increase, decrease, freeze, unfreeze, etc.
- **Operation amount**: The amount of this operation
- **Balance after operation**: Account balance after operation
- **Operation note**: Reason or description of operation