UTF8 Cat Normal VI garbled

When I was doing something today, I found that Lang was set to en_US. Utf-8,putty on the encoding is set to use the font encoding, the output of the putty on the normal, redirected to the file after the VI garbled, cat,more this file Chinese character display is also normal, check the Internet a lot of things finally found to change according to a statement:
Should be a formatting problem. For example, the man manual file has some formatting tags, you can use Man   , cat is normal reality, but VI looks a bit confusing. Because VI also treats the format tag as content.
  Set Export   Lc_all= "ZH_CN. GB2312 ", put it into the environment ~/.BASHRC the problem is solved