What is a block trade?

The so-called SMS reminder of large transactions refers to RMB accounts. If the amount of a single transaction is greater than or equal to 500 yuan (whether it is consumption, cash withdrawal or return), CCB will send a short message to remind you, provided that you have your own mobile phone number, so as to prevent risks and prevent the card from being stolen. If it's lower than 500 yuan, you won't send text messages. For dollar accounts, regardless of the amount, there will be SMS reminders. For withdrawal transactions, when the withdrawal amount is greater than or equal to $50, a short message will be sent to remind you.