你好 ProudBenzene，
我将用英语回答这个问题。
Looks like you are facing issue with Chinese comments when you open a “.m” file. The characters are displayed as garbled text in MATLAB, even though the encoding is already set to UTF-8.
You can try changing the MATLAB Desktop language to Chinese by following below MATLAB documentation:
If this did not resolve the issue, you can also refer to similar MATLAB Answers post:
“Why won't the editor display Chinese characters?”: https://www.mathworks.com/matlabcentral/answers/301283-why-won-t-the-editor-display-chinese-characters
Hope it helps.
