This is legal. There are several methods in China: 1, which can be purchased in official website, China and astropay with a handling fee of 2%. You can pay by unionpay, which means you can pay by credit card. 2. Taobao buys and sells more US dollars and more RMB cards, which is about 2% of the handling fee. 3. In the micro store, you can search for astropay card, which is basically 1% handling fee, and then you can pay by credit card or WeChat.

First of all, the characteristics of online payment are:

1. Online payment uses advanced technology to complete information transmission through digital circulation, and all payment methods are digital. The traditional payment method is to complete the payment through the circulation of physical entities such as cash, bills and bank remittances.

2. The online payment environment is based on an open system platform (Internet); Traditional payment operates in a relatively closed system.

3. Online payment uses the most advanced communication means, such as the Internet, while traditional payment uses traditional communication media. Online payment requires high hardware and software facilities, and generally requires networked microcomputers, related software and other supporting facilities; Traditional payment is not so harsh.

Two, online payment tools mainly include:

1, electronic credit card;

2. Electronic check;

3. Electronic cash.

Legal basis: Regulations of People's Republic of China (PRC) Municipality on Foreign Exchange Control.

Article 3 Foreign exchange as mentioned in these Regulations refers to the following means of payment and assets that can be used for international settlement expressed in foreign currencies: (1) Cash in foreign currencies, including banknotes and coins; (2) Foreign currency payment vouchers or payment instruments, including bills, bank deposit vouchers, bank cards, etc. ; Foreign currency securities, including bonds and stocks; (4) Special drawing rights; (5) Other foreign exchange assets.

Article 4 These Regulations shall apply to the foreign exchange receipts and payments or foreign exchange business activities of domestic institutions and individuals, and the foreign exchange receipts and payments or foreign exchange business activities of overseas institutions and individuals in China.

Article 5 The State does not restrict regular international payments and transfers.

Article 6 The State implements a system of statistical declaration of international payments. The foreign exchange administration department of the State Council shall make statistics and monitor the balance of payments, and publish the balance of payments regularly.