1:Click the “桌面” on the left corner 
2: Slide your finger from the right edge of the tablet pc to the left side, menu will come out click the “设置”on the right corner 
3:Click “更改电脑设置” on the bottom 
4:Click”时间和语言” 
5：Click “区域和语言”(the second one) 
6: Click” ENGLISH UNITE STATES” 
7: Click “设置为主语言” 
8 Restart the tablet pc 
then the system language will be English regards
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