WeChat Pay, one of the most popular mobile payment apps in China, has recently opened up its platform to international users. This means that visitors from all over the world can now add their Visa credit cards to WeChat Pay and use it to make payments to merchants across China.

To add a Visa credit card to WeChat Pay, you will need to:

1. Open the WeChat app and tap on the "Me" tab.

2. Tap on "Settings" and then "Tools".

3. Enable “Weixin Pay”. Note that in English it is called Weixin Pay instead of WeChat Pay. 

4. Then go to your chats and input your personal information when they ask you to verify your identity. There are options to choose a foreign ID or your passport. 

5. Tap on "Add Bank Card" and then type in your card number. It will automatically recognize that you are entering a Visa card. 

Once your card has been added, you can use it to make payments at any merchant that accepts WeChat Pay. There is a 3% transaction fee for payments that are more than 200 yuan (about $27 USD). This is charged by WeChat Pay used to cover the cost of processing the payment and providing the service. It is not charged by Visa. For more specific details on usage and fees, read this article by SINA Finance. 

• Keep your WeChat app up to date. The latest version of the app will have the latest features and security updates.

• Be aware of the transaction fees. There are some small fees associated with using WeChat Pay, so be sure to check the fee schedule before you make a payment.

There are many benefits to using WeChat Pay with a Visa credit card. For one, you can use WeChat Pay at millions of merchants across China. This includes everything from small shops and restaurants to large department stores and supermarkets. You can also use WeChat Pay to make online payments, such as for flights, hotels, and train tickets.

Another benefit of using WeChat Pay with a Visa credit card is that you can earn rewards points on your Visa credit card. This means that you can save money on future purchases or redeem your points for merchandise or travel.

WeChat Pay is a convenient and secure way to make payments in China. With the recent opening of its platform to international users, it is now even easier for visitors from all over the world to use WeChat Pay. By adding your Visa credit card to WeChat Pay, you can enjoy all the benefits of this popular mobile payment app, including the ability to make payments at millions of merchants across China, earn rewards points on your Visa credit card, and make payments quickly and easily with just your phone.