What is the name of the lark's weapon in the tutor?

Fuping strange martial arts miscellaneous equipment. It's a crutch. Also known as Sun Bin Turn. Commonly known as T-shaped crutches, T-shaped crutches are commonly referred to in martial arts. With the usage of hitting, hanging, teasing, picking, poking, hanging and wrapping flowers in the head, with the change of gait and posture, the routine is compiled. When practicing, it is required to turn around and walk, with strong wrists, soft posture and flexibility.

Kyoya Hibari's kidnapper has been changed into three forms by him. One is that the weapon similar to shot put can come out from below (the breakthrough form when the assistant guardians are surrounded by Bell's piano string in Instructor's lecture 59), and the other is that the kidnapper is tied with something similar to thorns (the form when Pogley comes out of the mountain to deal with the shark water attack in Skovaro). In The Black Demon, the lark fights with the skeleton, and the floating bird becomes a thorn.