LaTeX-Error-Command-CJKglue-already-defined

把\usepackage{CJK}删掉，再编译就不会报错了，只会报字体不存在的warning，latex会自动替换成可用字体。

Package fontspec Warning: Font "STFangsong" does not contain requested Script
(fontspec)                "CJK".

LaTeX Font Warning: Some font shapes were not available, defaults substituted.