Article 20 of the Interpretation of the Supreme People's Court on the Application of the Civil Procedure Law of People's Republic of China (PRC), if the subject matter of the sales contract is delivered through the information network, the domicile of the buyer is the place where the contract is performed; Where the subject matter is delivered by other means, the place of receipt is the place of performance of the contract. Where there is an agreement on the place of performance in the contract, such agreement shall prevail.