Legal basis: Measures for the Administration of Online Payment Services of Non-bank Payment Institutions Article 3 Payment institutions shall follow the principle of serving the development of e-commerce and providing small, fast and convenient micropayment services to the society, and provide online payment services to customers based on their bank accounts or in accordance with the provisions of these Measures. The term "payment account" as mentioned in these Measures refers to the electronic bookkeeping opened by the payment institution that has obtained the Internet payment business license according to the real wishes of customers, and used to record the balance of prepaid transaction funds, payment instructions initiated by customers and transaction details. The payment account shall not be overdrawn, lent, leased or sold, and shall not be used to engage in or assist others in illegal activities.