How to make my current linux LIVE CD to be able read other then english character language files&folder like chinese word, japaness word...
You can't - it is read-only.
Other live CDs are more flexable - consider knoppix.
I don't know if the Ubuntu live desktop has asian language support - you can look, language support is one of the things they are supposed to be good at. OR you could try B2D Linux
- a Taiwanese live distro mased on Knoppix, and you can get it from LQ.
I take it the troublesome files are labelled in unicode?
If you just want a backup, consider copying the entire drive with dd. This command doesn't care what the file names are. You could also try archiving the top documents directory, and copying the zip file.