He previously played mid lane for the Golden Guardians of the North American League of Legends Championship Series (NA LCS).

[citation needed] Hai began his professional League of Legends career in earnest as a part of Orbit Gaming in 2012.

They finished the two-day online tournament in first place, most notably defeating Curse Gaming 2–1 in the quarterfinals and sweeping Team Dynamic 2–0 in the finals.

[7] Competing under the name Team NomNom and then Cloud9, Nientonsoh, Hai, Yazuki, WildTurtle, and LemonNation secured a spot in the Season 3 North American Offline Qualifier for the inaugural split of the League of Legends Championship Series.

[citation needed] Hai was hospitalized after suffering a collapsed lung in June, which prevented him from attending All-Star 2014 in Paris.

[13] On April 22, 2015, Cloud9 manager and founder Jack Etienne announced that Hai was retiring from competitive League of Legends and leaving the team.

Hai mainly blamed his wrist injury in his retirement, saying, "I cannot keep up with the amount of Solo Queue games my teammates play and it’s not fair to them.

He also stated that team morale was at an all-time low and that his teammates were losing trust in his shot calling and performance as a player.

In the second week, Cloud9 needed only one win to advance to the quarterfinals but instead lost four games in a row, including a tiebreaker loss to ahq.

[citation needed] On the final day of Group Stages, Hai made an obscene gesture towards an opponent who predicted Cloud9 would lose.

[citation needed] For the 2016 Summer Split, Hai moved to Cloud9's North America League of Legends Challenger Series (NA CS) team.

[26] Before the start of the 2017 LCS season, the Cloud 9 Challenger roster, including Hai in the mid lane, was purchased by Wesley Edens and rebranded as FlyQuest.