Xiaomi mi4i 6.7.2.0 lximich not able to root

Hi, I am using Xiaomi Mi4I, having 6.7.2.0 LXIMICH. I tried to root with Xiaomi rooting tool kit, but nothing happens after I press 1 & enter.

I tried to root with Kingsoft pc software also, but after sometime it says root failed.

Also when tried to root with Kingsoft .apk,it displayed error code : 0x1BF29D
Please help.