i need add arabic lang to Huawei mate 8 NXT-AL10

haw i cane add arabic
i cant root it
and haw i cane open bootloder
i need add arabic lang to Huawei mate 8 NXT-AL10

thx

INFO

Hardware:hi3650
Board:nxt-al10
CPU ABI:arm64-v8a
Manufacturer:huawei
Model:huawei nxt-al10
Android Ver:6.0
bootloader ver:unknown
USB config:hisuite,mtp,mass_storage,adb,hdb
User:jenkins
Baseband ver:cbp8.2,21.750.01.00.031
Build number:nxt-al10c00b182
ID:huaweinxt-al10
Region:cn
Language:zh
Chipset:hi3650
Root: Not Root
>>Done