There is a repayment channel in Alipay, and there is also a repayment channel in ICBC's mobile app. ICBC's app repayment is real-time, and you can see the change of the amount immediately. Alipay's arrival time is uncertain, subject to the bank notice, but it will not exceed 24 hours. In this case, the repayment should not be successful, so you'd better check it to avoid overdue.