In 2007, the chairman of the Asian Snooker Association saw his potential, and he gained a wild card in the China Open.

In the 2008 World Championship he qualified for the main stage, He beat Colin Mitchell 10–0, Lee Walker 10–9 Joe Delaney 10–5, David Gray 10–5, and then Dominic Dale 10–9 to become only the fourth 17-year-old player to qualify for the Crucible after Stephen Hendry, Ronnie O'Sullivan and Judd Trump.

He beat Rod Lawler 10–7, Jimmy White 10–8 and Jamie Cope 10–7 to reach the Crucible for the second time in his career.

[10][11] Liu received first round entry into the UK Championship and Welsh Open as all 128 players on the snooker tour began at the venue stage.

In the UK he beat Tony Drago 6–1, before losing 6–5 against Robert Milkins and at the Welsh he saw off Chen Zhe 4–2, but was then whitewashed 4–0 by Joe Perry.

[12] Chuang finished outside of the top 64 in the world rankings and would have been relegated from the tour; however, his placing of 12th on the Asian Order of Merit saw him earn a fresh two-year card for the 2014–15 and 2015–16 seasons by claiming the third of four spots available to non-qualified players.

His only wins came at the Yixing Open where he beat Michael Tomlinson and Wang Heng, before losing 4–0 to Li Hang in the last 32.