Yes, you can use WeChat Pay as a foreigner without a Chinese bank card. Since 2023, WeChat has made it possible for international visitors to link their overseas credit cards directly to the app. This is a significant change from the past when a Chinese bank account was essentially required for full functionality.

How to Set It Up
Download and Register: Download the WeChat app from your app store and register using your international phone number.

Access Wallet: Once you have the app, navigate to "Me" > "Services" > "Wallet."

Add Your Card: Select "Bank Cards" and then "Add a Bank Card." Follow the prompts to enter your credit card information. WeChat Pay accepts major international cards like Visa, Mastercard, American Express, JCB, Diners Club, and Discover.

Verify Your Identity: You will need to provide your personal details and may be asked to upload a copy of your passport for verification.

Set a Payment Password: Create a 6-digit payment password to secure your transactions.

Key Limitations for Foreigners
While this process makes WeChat Pay accessible for tourists, there are some important limitations to be aware of:

Limited Functionality: You can use your linked international card for everyday purchases at millions of merchants. However, you generally cannot use it for peer-to-peer transfers (sending money to friends) or for giving out "red packets," a popular social feature.

Transaction Limits: There are daily, monthly, and yearly transaction limits. For example, a single transaction may be limited to around ¥6,500, with a cumulative monthly limit of ¥50,000.

No Cash-Outs: You cannot withdraw money from your WeChat Pay balance. Your card is used for direct payments, not for topping up a separate wallet balance.

Not All Merchants: While widely accepted, some smaller, rural vendors or merchants may not have the capability to accept payments from international cards. It's always a good idea to have some cash as a backup.

A useful resource that covers how to set up WeChat Pay as a foreigner without a Chinese bank card is the video WeChat Pay For Foreigners Without China Bank Card.