The operation steps are as follows:
Open the mobile phone WeChat and click "Settings" in "Me".
2. Then click "Settings" and find "General".
3. Then click to open the "storage space" inside.
4. Then on the storage space page, you can see the option of "cleaning the WeChat cache".
5. Then click to clear the WeChat cache, which will prompt that it will take some time to clear the cache. Please wait patiently, as shown in the figure.
6. If it is not cleaned for a long time, it will take a long time to clean the cache, about 1 minute, and then it will be fine. Your chat record is still there and will not be emptied.