Tencent QQ can change the language by changing the system language. The specific method is as follows (taking Huawei p20pro mobile phone as an example):

1. Open the system's own search interface, enter the search word "language", and then click Language Settings.

2. In the next interface, click the "Language" button at the top.

3. Click the "Add Language" button in the subsequent interface.

4. Select a language in the automatic pop-up interface.

5. Then select another language in the returned interface.