The specific steps on how to link the showcase products in the Douyin account to the WeChat Mini Program Mall are as follows:

1. Open the My interface of the Douyin app and click the three in the upper right corner;

2. Click the Creator Service Center;

3. You can see the product sharing and click;

4. In the product showcase interface, click the product sharing permission;

5. Perform real-name authentication and apply, and then link the product.