[1][2] Previously known as Wu Chia-ching, the spelling of his name was changed upon moving to mainland China.

The next year, he was the top seed of the event, but lost in the quarter-final round to eventual winner Ronato Alcano of the Philippines.

He placed second to Darren Appleton in the inaugural WPA World Ten-ball Championship in 2008, claiming the runner-up prize of US$40,000[5] In the semi-finals of the event, Wu had defeated Demosthenes Pulpul of the Philippines, 11–8, using a borrowed cue stick.

Wu stated the decision was made for sporting reasons and should not be regarded in a political light.

[10] Republic of China Deputy Minister of the Interior Lin Tzu-ling stated that "An ROC national who wants to give up his or her citizenship must go through certain procedures.