Group 1 - The maximum number of stock accounts an individual can open with different securities companies is three, according to the China Securities Regulatory Commission [1] - Most banks allow one bank card to be linked to multiple securities accounts, but there may be specific restrictions depending on the bank [1][4] - Funds in different securities accounts are managed separately, requiring transfers back to the bank card before moving to another account [1][4] Group 2 - The transfer of funds between bank cards and securities accounts is only available during trading hours, which are from 9:00 AM to 4:00 PM on trading days [4] - Most brokers and banks do not charge fees for bank-securities transfers, but it is advisable to confirm this with the broker [4] - Financing and margin accounts are separate from regular stock accounts, and funds in these accounts are specifically for margin trading [4][5] Group 3 - It is recommended to use a dedicated bank card for stock trading to avoid mixing with daily expenses, which can lead to unintended fund depletion [7] - Regular updates of personal banking information are crucial to avoid missing important notifications from the bank [7] - Investors should be vigilant against fraud and promptly report any suspicious account activity to prevent further losses [9][10] Group 4 - Diversification in investment is essential to mitigate risks, suggesting a mix of stocks, funds, and bonds based on individual risk tolerance [10] - Setting appropriate stop-loss points can help manage potential losses effectively [10] - Maintaining a clear and organized account can reduce the risk of information leakage and facilitate better account management [7]