Hi, lifan,
PM is a very old application and does not handle Asian double-byte or the latest Opentype fonts.
If you wish to pass PM files back and forth to China, both parties will need the same versions of PM - either both Western PM or both Chinese PM. Western PM will not fully open Asian PM files.
I believe Adobe InDesign has multi-language facilities built-in, but my experience here is very limited.
Word has mulit-language support, and PSD files are not language dependent.
Iechyd da! John
Glannau Mersi, Lloegr.