When Huang first arrives in Liberty City, he is attacked and left for dead by gangsters who stole the sword. Huang escapes and tells his uncle what happened. It turned out Wu wanted to give the Yu Jian to Hsin to cement his position as successor. Because of the loss, Wu was dishonored and he and Huang struggled to keep business afloat.
Later, Hsin and Huang try to find the FIB informant causing trouble for the Triads. Hsin suspects Huang and attempts to kill him, but is stopped by Wu. Wu convinces Hsin to give Huang time to find the real informant, bringing haste to the mission. During the search, Wu places "evidence" that narrow the search down to Zhou Ming and Hsin's son, Chan. Disgraced by the fact that his own son is an informant, Hsin steps into retirement and appoints Wu as the new head of the Triads. Later, Huang kills the two suspects.
Near the end of the game, Huang's own police connection, Wade Heston, reveals that the rat is still out there, and holding a meeting with his allies. Huang and Heston drop in on the meeting and Wu is revealed to be behind everything. Wu tries to explain himself, but Huang won't listen. Heston tries to arrest Wu, but Wu orders his men to kill them. Huang and Heston fight their way out, while Wu flees. Huang and Heston chase Wu across the city, by boat and by car before Wu stops at Hsin's house. In a confrontation, Hsin demands Wu to hand over the sword, and Wu responds by stabbing him. Huang arrives and kills Wu. Hsin then appoints Huang as head of the Triads.
Wu is depicted at the first glance to be a caring uncle, trying to teach Huang the true values of being a triad. He is known to speak in an archaic way in almost any situation, even to the point Hsin Jaoming criticised him for that. Despite appearing as a good person at first, he betrays the Triad to secretly become its leader, showing his true manipulating nature.