Rooting the phone (Z981) from source code?

Okay! I found the source code for ZTE ZMAX PRO (Z981) phone. Could this help in rooting the phone?

Download link:
http://download.ztedevice.com/device/global/support/opensource/2/20160803_1/MPCS_P895T20V1.0.0B13_kernel.tar.gz

Someone has already made the TWRP recovery for the phone, but the phone’s bootloader is still locked yet.
http://www.mediafire.com/file/p4x10tb46jfcijq/twrp+v3+for+zte+zmax+pro+beta+1.zip

Using the sources:
Kernel
https://github.com/messi2050/android_device_zte_urd

Device
https://github.com/messi2050/android_device_zte_urd

Maybe you need to ask the official to unlock the bootloader ,MI6 also need to ask the official to unlock。
but idon’'t kown that whether the ZTE is like xiaomi.

I am gonna talk to ZTE, and see what they can do.
I myself tried a lot to unlock the bootloader, but I got failed.