Sichuan Tax WeChat official account does not need to be downloaded. The specific steps for direct use in WeChat are as follows:

1. Pay attention to the official account of "Sichuan Taxation" WeChat.

2. Click "Tax Payment" and "Social Security Payment" in the WeChat menu.

3. Enter the "Tax Payment" integration page and click "Electronic Tax Bureau Entrance".

4. Enter the "Tax Payment" function module of Sichuan Electronic Taxation Bureau to handle all kinds of business.