Where is factory reset in recovery mode?

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Nov 18, 2018
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i have a chines tablet and when i hold down the power key + volume up , for about 5 seconds , chines recovery mode appears. (by holding volume up key + volume down key + power key noting happens) and there is no factory reset option there even in chines.

i need to reset factory because i forget the password .

here is the recovery mode :

http://tinypic.com/view.php?pic=1r8ylk&s=9#.W_GBdopoRPY
any help?