legal basis
Article 558 of the Civil Code of the People's Republic of China
After the creditor's rights and debts are terminated, the parties concerned shall follow the principles of good faith and perform obligations such as notification, assistance, confidentiality and recycling of old things according to trading habits.
Article 559
When the creditor's rights and debts are terminated, the subordinate rights of the creditor's rights shall be extinguished at the same time, except as otherwise provided by law or agreed by the parties.