China Bank doesn't need electronic signature to withdraw cash.

Bank of China can use WeChat to withdraw cash, as follows: 1. Log in to the Consumer Finance APP of Bank of China and click "Flash Pay".

2. Open WeChat China UnionPay Express to obtain the savings account of Weizhong Bank.

3. Bind the account of Weizhong Bank and transfer it from WeChat China UnionPay Express to other bank cards through the WeChat transfer function.