This martial arts uniform emoji represents not only Korea's Taekwondo but also various other East Asian martial arts like Japan's Judo and Karate. It also encompasses the culture of indicating skill level by the color of the belt tied around the waist.

The uniform is more than just sportswear; it's an expression of the "way" (Do), symbolizing the practitioner's courtesy, perseverance, and respect. Therefore, using it when you've achieved spiritual growth, like passing a difficult test or succeeding in self-management, adds a deeper meaning.