First, if you have a Hong Kong bank account, you can directly transfer money from your securities account to your Hong Kong bank account and then back to your mainland account.

Second, you don't have a bank account in Hong Kong. When withdrawing funds, you need to ask the securities company that opened the account for a withdrawal slip, or you can download it directly from the securities company's website, then fill in the mainland bank account with the same name as the securities account holder you want to use to receive funds, withdraw the amount, and sign it for confirmation. Note here that signature is very important. Generally, it is required to be consistent with the signature on the securities account opening form, and then fax or scan the withdrawal form to the customer service department or delivery department of the securities account opening firm, or directly send it to the brokerage firm. After receiving the withdrawal slip, the broker will transfer the money to your designated mainland bank account. In both ways, the return of funds is subject to the state foreign exchange control.