1. Use windows search
In the windows search, find the shortcut 3ds max xxxx simplify chinese and send it to the desktop.
2. Shortcut not found
If you can't find the shortcut in windows quick search, then in:
Under C:\ProgramData\Microsoft\Windows\Start Menu\Programs, find the shortcut of the installed 3dsmax xxxx version.
3. Method 1 and 2 are invalid
If you can't find the shortcut, on the 3dsMax xxxx icon, right click, properties,
Add a space after the target /Language=CHS
OK to save.
