SQL_ASSISTANT "Error executing query for record 1: 22001: Character string truncated" - forum topic by jlwan98@hotmail.com

hI,
   I encounter a error when i use SQL Assistant 14.0 to load a.txt to database,the error imformation is:"Error executing query for record 1: 22001:  Character string truncated"
   the content of a.txt is 
        "aaaa" : "中国"
        "bbbb" : "英国"
   my os's code page is (ansi 936)/(gb2312)
   can any one solve this error,thank you in advance!