Chun Woo Han is the english techer and martial art master of Shi Woon Yi who is hellbent to take reveng for his master death on the Murim world.
Chun Woo past is not known, however, it is know that he was an orphan who lost his parent as child. Chun Woo would find Un-Wol cave and beg him to train him in order to become stronger. Un-Wol woul accept and take Chun Woo as his disciple. Later, When Un-Wol find out from his disciple that he used what he learned to hurt others he told himto leave since he become drunk on power and forgot his pain and fear and return when he learn the fear of using power. After learning his lesson, Chun Woo would continue to train under his master. Years after that Un-Wol would teach Chun Woo about the Black Origin Threshold and pass onto him the task of perfecting the technique. Mny years later Chun Woo would participates in the Shinmujengpe. The Martial Arts Alliance promised that if he earned the title Goomoonryong (Nine Art Dragon) they would fulfill a wish for him and everyone was there was a witness, and did conquers all nine seats of power, thought he insulted and made mockery of all his opponent earning himself the title of Goomoonryong, thus becoming the first person in the Murim world to gain the title. Chun Woo was so happy because his wish was to free his master from his imprisonment. Chun Woo rushed to tell his master of his freedom only to find The Martial Arts Alliance waiting for him their as they suspected Un-Wol involvement. Chun Woo demanded his wish to be fulfilled and allow his master to leave the cave. However, the Chief denied any promise about fulfilling a wish and even when Chun Woo stated that everyone who were to the Shinmujengpe were witness of their promise the Chief stated that they will not stand against them.
Enrage for this betrayal, Chun Woo insulted the Martial Arts Alliance which angered the Iron Fist school leader who attacked and asked the Chief the permission to kill Chun Woo which was given to him. However, Un-Wol leave the cave unnoticed to throw the Iron Fist away with ease using one hand. Un-Wol asked the Chief if he still desire the Black Heaven and Earth which the Chief agree to spare Chun Woo life in exchange for the technique, but only if he destroyed his Ki Center in order to prevent him from using martial arts. Chun Woo refuse to agree on such condition, but hear his master saying that he understand only to turn around and see his master had pierced his own heart and stated that he understand now how much the Chief desire the Black Heaven and Earth technique and now their is one person, Chun Woo, in the world who know the technique and ask him if he is going to kill him too. Un-Wol fall died in front of his disciple who take off the eye of the Iron Fist school leader for mocking the final moment of his master and state that he won't let them, the martial arts alliance, to look down at the death of his master. A fight happened after that, thought it's unknown what exactly happened, but Chun Woo seemed to have fallen from a cliff and was presumed dead.