Why do Taekwondo clothes have red and black collars, white-collar workers and black collars? What is the difference? Ask god for help

Leucorrhea: Leucorrhea represents blank. Practitioners don't have any knowledge and foundation of Taekwondo, and everything starts from scratch. Yellow belt: The yellow belt is the color of the earth, just as plants take root and sprout in the soil. At this stage, we should lay a good foundation and learn the spirit of caring for the earth. Yellow-green belt: the level between yellow belt and green belt, and the skills of practitioners are constantly improving. Green belt: The green belt is the color of plants, which represents that the taekwondo skills of practitioners are getting better and better. Green belt and blue belt: the transition zone between green belt and blue belt, and the level of practitioners is between green belt and blue belt. Blue ribbon: The blue ribbon is the color of the sky. With continuous training, practitioners' Taekwondo skills gradually mature, growing towards the sky like a tree, and practicing Taekwondo has been completely introduced. Blue-red belt: the level of practitioners is slightly higher than the blue belt, slightly lower than the red belt, and between the blue belt and the red belt. Red ribbon: Red is the color of danger and caution. Practitioners already have considerable attack ability and pose a threat to their opponents. Pay attention to cultivation and control. Red and Black Belt: After a long period of systematic training, practitioners have completed all the courses before 1 and started the transition from red belt to black belt. Black belt: Black belt means that practitioners are quite mature in technical movements and ideological accomplishment after long-term tempering. It also symbolizes that the black belt of Taekwondo is not affected by darkness and fear.