Yes, depositing money into the ATM is repayment.

When repaying, you should treat it as an ordinary bank card. Transferring money or depositing money to this card is considered repayment. Specifically, you can deposit money into your credit card at an ICBC ATM, transfer funds from other banks' cards to ICBC's credit card through online banking, transfer funds from other banks' cards to ICBC's credit card through mobile banking, transfer money from other people's cards to yours, and deposit money at the ICBC counter. Pay with your credit card here or Lakala at the convenience store. . . . . . It will be all right.

Just use whichever method is more convenient. In short, as long as the money can be transferred to this card, it is OK.