C548 Shen Qianyue's Challenge

One must know that in the ranking system of Taekwondo.

It was usually divided into ranks according to the color of the belt on the waist.

Among them, it was generally divided into:

"White belt, yellow belt, green belt."

"Blue belt, red belt, black belt."

Among them, black belt was the highest, and white belt was the lowest.

The highest black belt was divided into nine segments.

Furthermore