Wu began cycling at the age of twelve, and having shown his great talent and passion for sport, turned pro just 8 years later.

In 2005, he claimed numerous titles road race at the Tour of South China Sea in Macau and Hong Kong, while playing for Purapharm Cycling Team.

[3] In 2007, Wu started his season with the Hong Kong Pro Cycling Team by winning his first ever national Under-23 championship title in 2 hours, 10 minutes, and 16 seconds.

A year later, Wu switched his focus to the 2008 Summer Olympics in Beijing, where he finished the men's road race in 88th place with a time of 7:05:57.

[4] Wu also became the first ever cyclist from Hong Kong to successfully complete the Olympic road race.