First of all, you log in to Taobao with a Taobao password. Enter the Alipay password first when paying. If there is no money or not enough money in Alipay, you can choose a bank card or credit card, then enter the bank password, and finally fill in the password of online banking. Actually, it's quite troublesome. If you don't know, you can try. It won't lock for three times. If there are many input errors, it will be locked until the next day.