Here's a small script to remove Chinese kingruser, all related files and folders, and install SuperSU.
This script will do all the work for you without using PC, just by terminal, first of all, thanks to chainfire for his SuperSU files.
Before starting :
Download and install Terminal emulator appTerminal emulator app
Download and unzip "Replace_Kingroot_With_SuperSU.zip
Send the extracted folder "mrw" to the internal storage of your device and make sure that this folder contains 4 files
Open Terminal emulator and type :
"Su" (without "")
Allow root permission
" sh /sdcard/mrw/root.sh" (without "" , notice there's space between sh /sdcard.)
It might display some error, but wait for 30-40 seconds and at the end it will launch supersu or open supersu manually.
Update su binary normal, then reboot.