Legal analysis: effective. According to the provisions of the Civil Code, WeChat chat records, as electronic data, are legally in written form. As long as the other party to the contract agrees, there is no problem. The Civil Code stipulates that the parties may conclude a contract in written form, oral form or other forms. Written form refers to contracts, letters, telegrams, telexes, faxes and other forms that can tangibly express the contents contained.

Legal basis: Article 469 of the Civil Code of People's Republic of China (PRC), the parties may conclude a contract in written form, orally or in other forms.

Written form refers to contracts, letters, telegrams, telexes, faxes and other forms that can tangibly express the contents contained.

A data message that can tangibly express its content through electronic data interchange, e-mail, etc. , and can be retrieved at any time, are considered in writing.