Currently Being ModeratedJan 24, 2013 8:29 PM (in response to Pippi10)
Mail cannot read Chinese characters. Message looks like a series of "??????".
Normally that indicates an encoding glitch, where the email headers are not telling Mail the right encoding to use. The first thing to try is Message > Text Encoding and see if UTF-8 or one of the various Chinese encodings give the right display.
Also go to View > Message > Raw Source and tell us what you see in the headers that say "charset= ".