The following seasons would see him become a vital member of the team that would qualify for the 2009 AFC Champions League for the first time in the club's history, while also going on to play in five games and scoring one goal during the tournament. He would then see the club become runners-up of the 2010 league season while also seeing Tianjin finish in the last sixteen of the 2011 AFC Champions League where he played in four games and scored one goal. Despite these achievement Wu Wei'an did not win any trophies until the 2011 Chinese FA Cup where he came on as a late substitute as Tianjin won the cup 2–1 against Shandong Luneng Taishan.
In subsequent seasons, he became an important member of the team that qualified for the 2009 AFC Champions League in club history. He played five games and scored one goal during this tournament. Later, Tianjin reached the last sixteen of the 2011 AFC Champions League where he appeared in four matches and scored once. Despite these achievements, Wu Wei'an did not win any trophies until the 2011 Chinese FA Cup, where he came on as a substitute to help Tianjin secure victory with a score of 2–1 against Shandong Luneng Taishan.