A legally established and valid contract is still valid after being torn up. Once the contract is established and takes effect, it is still valid even if it is unilaterally torn up. If the party who tore up the contract fails to perform its obligations under the contract, the other party has the right to claim its liability for breach of contract in accordance with the contract, and may claim to terminate the contract.

Tearing up the contract will not invalidate it. According to the law, the termination of the validity of the contract mainly includes:

1. The contract expires naturally;

2. Complete performance and termination of contractual obligations;

3. Termination due to the contract subject exercising the right to terminate the contract;

4. The subject matter of the contract is completely lost and terminated;

5. Termination due to the termination of the contract.

legal ground

Article 490 of the Civil Code of People's Republic of China (PRC), when concluding a contract, if the parties conclude the contract in the form of a contract, the contract shall be established when the parties sign, seal or press their fingerprints. Before signing, sealing or fingerprinting, one party has fulfilled its main obligations, and the contract is established when the other party accepts it. A contract shall be concluded in written form as stipulated by laws, administrative regulations or agreed by the parties. If the parties do not do this in writing, but one party has fulfilled its main obligations and the other party accepts it, the contract is established.

Article 557 of the Civil Code of People's Republic of China (PRC) shall be terminated under any of the following circumstances: (1) The debt has been performed; (2) The debts offset each other; (3) The debtor deposits the subject matter according to law. (4) Creditors are exempted from debts; (5) Creditor's rights and debts are owned by one person; (six) other circumstances stipulated by law or agreed by the parties to terminate. If the contract is terminated, the rights and obligations of the contract shall be terminated accordingly.