Liang received a wildcard nomination to the Main Tour despite not qualifying directly; this was because he won the 2005 IBSF World Under-21 Championship, and also because not all of the players that were eligible for the Main Tour took their places. In his first ranking tournament, the Grand Prix, he lost in the first qualifying round to Rory McLeod 2–5. He fared better in the next ranking event, the UK Championship, where he almost whitewashed Alfred Burden in the first qualifying round 9–1, but subsequently lost in the second qualifying round to Marcus Campbell by the narrowest of margins, 8–9.