Here's how I solved the issue of abnormal fonts in Deepin applications.
The difficulty in promoting Linux in China mainly comes from certain large domestic companies' unfriendliness towards Linux systems (excluding Android) on the user end.
Deepin, as a company, has done a lot of software porting, such as Foxmail and TIM. Although they run in a customized version of Wine, they can still be used. The only downside is that the Windows environment in deepin-wine seems to lack font files, which leads to incorrect font rendering in software interfaces.
As for the solution, I extracted the fonts from a Windows 10 virtual machine and created a symbolic link (to save space) to the font folder in the container (~/.deepinwine/Deepin-Foxmail/drive_c/windows/Fonts
), and that fixed the issue.