Legal basis: People's Republic of China (PRC) Civil Procedure Law.
Article 23 A lawsuit arising from a contract dispute shall be under the jurisdiction of the people's court in the place where the defendant has his domicile or where the contract is performed.
Article 64 The parties have the responsibility to provide evidence of their own claims. The people's court shall investigate and collect evidence that the parties and their agents ad litem cannot collect on their own due to objective reasons, or evidence that the people's court considers necessary for hearing a case. The people's court shall comprehensively and objectively examine and verify the evidence in accordance with legal procedures.
Article 119 A prosecution must meet the following conditions: (1) The plaintiff is a citizen, legal person or other organization that has a direct interest in the case; (2) Having a clear defendant; (3) Having specific requests, facts and reasons; (4) Belonging to the scope of civil litigation accepted by the people's court and the jurisdiction of the sued people's court.
Article 120 A complaint shall be submitted to the people's court, and copies shall be submitted according to the number of defendants. If it is really difficult to write a complaint, it can be made orally, which will be recorded by the people's court and the other party will be informed.