1. The purpose of the contract cannot be achieved due to force majeure.

2. Before the expiration of the performance period, one party clearly indicated or indicated by his own behavior that he would not perform the principal debt.

3. One party delays the performance of the principal debt and fails to perform it within a reasonable period after being urged.

4. One party delays the performance of debts or commits other breach of contract, which makes the purpose of the contract impossible to achieve;

5. Other circumstances stipulated by law.