Submit all the necessary materials to a people's court having jurisdiction to file a civil case. These materials include:

1. A complaint, with copies provided according to the number of defendants (If the plaintiff is not proficient in Chinese, they may have it drafted through a law firm on their behalf.)

2. Proof of legal status of the plaintiff (A photocopy of your passport)

3. Documents related to the legal representative (a power of attorney, a photocopy of the lawyer's license, a letter from the law firm, etc.)

4. Evidence (Invoices, receipts, purchase contracts, shipping documents, screenshots featuring the chat records with the supplier, product appraisal results, etc.; photocopies of these materials can be submitted instead.)

Notice:

If you need to appoint a lawyer as your legal representative, it is necessary to engage a Chinese lawyer. According to the Civil Procedure Law of the People's Republic of China, "A foreign national, stateless person or foreign enterprise or organization who sues or responds to a lawsuit in a people's court and needs to appoint a lawyer to represent them must appoint a lawyer from the  People's Republic of China."