Refers to the transfer of funds from the straight flush bank account to the straight flush securities account. If you have a certain fund balance in the Flush Bank and want to trade securities, you can transfer these funds to the Flush Securities account through the Flush Bank Transfer System, so as to buy and sell securities products such as stocks and funds. At this point, the funds in the Flush Bank will be deducted, and the funds in the Flush Securities account will increase accordingly. This process is called "deposit and withdrawal".