Qudans first began playing Tekken from the first game in the series at a young age casually. It was not until Tekken Tag Tournament that he began to play seriously , quickly making a name for himself in the South Korean Tekken scene and became an EVO Champion for the game in 2005, defeating Ryan Hart in the finals . Qudans kept playing until 2007, retiring due to hand fatigue experienced from excessive exercising which even forced him to temporarily switch to using a Joypad for Electric Cancel 6  (he won the Tekken 5 and Tekken Tag Tournament events regardless). After this Qudans went on a five year hiatus from competitive Tekken, enlisting in the Army, going to University and getting a part-time job.
After his hiatus Qudans made his return to Tekken after being convinced by fellow player Ji3moon Ace to start playing Tekken Tag Tournament 2 and was motivated as well after watching Knee playing for numerous tournaments. His rise to stardom once again started with Tekken 7 however winning multiple tournaments such as the first season of AfreecaTV TEKKEN League and the SEA Major with the latter victory ensuring him a place at the first Tekken World Tour Finals where he emphatically won the event after a 10 year absence from North American tournaments. Shortly after this he was sponsored by ROX Dragons for the next TWT circuit but later signed with UYU in early 2018.
|2018-12-02||2nd||Premier||Tekken World Tour Finals 2018||1 : 3||Rangchu||$4,500|
|2018-10-14||4th||Premier||SEA Major Singapore 2018||0 : 2||Jeondding||$500|
|2018-08-05||2nd||Premier||Evolution Championship Series 2018||0 : 3||LowHigh||$3,086|
|2018-07-01||2nd||Premier||Community Effort Orlando 2018||2 : 3||Jeondding||$1,962|
|2018-06-10||1st||Premier||Fighting Games Challenge 2018||3 : 1||Knee||$2,500|
|2017-11-19||1st||Premier||WEGL 2017 Super Fight Invitational||6 : 0||AK||$9,110|
|2017-11-12||1st||Premier||Tekken World Tour Finals 2017||3 : 1||Saint||$15,000|
|2017-10-15||1st||Premier||Tekken World Tour 2017 Asia-Pacific Regionals @ South East Asia Major 2017||3 : 2||Noroma||$6,000|
|2017-10-08||2nd||Major||TWFighter Major 2017||0 : 3||JDCR||$2,000|
|2017-06-17||1st||Major||AfreecaTV TEKKEN League 2017 : Season 1||7 : 6||LowHigh||$2,624.01|
|About achievementsComplete Results in any Tournament|
- His nickname originated from typing in his first name in a keyboard in English mode, which instead of typing "Byeong Mun" actually typed out "Qudans" instead.
- 2018-05-12 | by Core-A Gaming