How do i root miui 9 without pc.

[NotCat]

Hay all!
Now I installed miui and everything works... Haha! Too good to be true!
Now my twrp recovery is gone... And I can't root it sence my friend broke my laptop's screen soo I don't have a laptop ATM...
I tried googling for help (Maybe i missed something) and I know some of u ppl are geniuses soo... How can I root my mi 5s miui 9.
Thanks already! :3

 

[Godic]

There's an option in security app to simply root your miui9.

 

[NotCat]

There's an option in security app to simply root your miui9.

Where?