Legal analysis: we should pay attention to examining the qualification of the other party as a party to the contract to avoid invalid contracts.

Legal basis: Civil Code of People's Republic of China (PRC).

Article 471 The parties may conclude a contract by offer, acceptance or other means.

Article 490 Where the parties conclude a contract in the form of a contract, the contract is formed when the parties sign, seal or fingerprint it. Before signing, sealing or fingerprinting, one party has fulfilled its main obligations, and the contract is established when the other party accepts it.