There is 2 possible way to open or reset your password and pattern,
1; sign in to google and click on find my phone and reset
2: switch off your phone completely ,
Press volume+ with power on
or volume - with power button and follow the instructions
Sometimes pressing colume + buttons bring alot of options and please choose recovery option and follow instruction if nothing happens then
Try volume - with power button and alot of chinese menu will appear simoly select wipe emmc(probably 2nd last option) on list...
Your phone will be formatted and clean
This procedure is for all (99%) android phones and hope it will be work for you....
Please note i can do for you remotly (R100) incase if you fail smile :)