1. First, in the WeChat chat interface, click the "smiley face" icon on the left side of the input box. In the emoticon selection interface, slide down to find the "food" category, and click.

2. Secondly, in the food expression, you can find the expression pack of "nine turns to the large intestine", or you can search for related keywords, select the expression pack you want to use, and click.

3. Finally, the expression pack will be added to the input box and can be sent to the other party.