Not money laundering. However, if there are some specific circumstances, it will be identified as money laundering. Money laundering refers to the act of making illegally obtained funds look like legal capital flows through a series of means to cover up their illegal sources. Therefore, in any of the following circumstances, the act of returning cash to the credit card will be recognized as money laundering.

1. Large-sum cash transaction: large-sum one-time repayment exceeds the limit set by the bank, or frequent large-sum cash transactions will attract the attention of the bank, which is considered as money laundering.

2. Frequent repayment: Frequent repayment and small repayment amount may be considered as dispersing capital flow and covering up illegal sources.

3. Inability to explain the source of funds: Inability to explain the source of repayment funds or suspicious source of funds will be regarded as money laundering.