[How-To] Rooting this chinese tablet

[guruboy]

I bought this chinese tablet from aliexpress, sometimes it boots sometimes it take a while, I guess it is because of 1GB ram which is quite low ,
I want to employ swap memory using memory card but for that I have to root this device, and I don't know how to do it, there are no tutorials or guideline available on internet to root this tablet, I tried using apps like kingoroot but they failed. 

this is the tablet

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CPUZ Details

Model NS P10A8100
manufacturer : Insignia
Board : NS P10A8100
Hardware : mt8163
processor architecture : 4x ARM Cortex A53 @1.30Ghz
android version 7.0
api level 24
kernel architecture armv8L or armv8i
kernel version 3.18.35
Root : NO