legal ground
Article 562 of the Civil Code
The parties may terminate the contract if they reach an agreement through consultation.
The parties may agree on the reasons for one party to terminate the contract. When the cause of termination of the contract arises, the creditor may terminate the contract.
Article 563
In any of the following circumstances, the parties may terminate the contract:
(a) the purpose of the contract cannot be achieved due to force majeure;
(two) before the expiration of the time limit for performance, one of the parties clearly stated or indicated by his own behavior that he would not perform the main debt;
(three) one party delays the performance of the main debt, and fails to perform it within a reasonable period after being urged;
(5) Other circumstances stipulated by law.
Article 565
If one party claims to terminate the contract according to law, it shall notify the other party.
If one party brings a lawsuit or applies for arbitration to claim the termination of the contract without notifying the other party, and the people's court or arbitration institution confirms this claim, the contract shall be terminated when the complaint or a copy of the arbitration application is served on the other party.