In 2003, Liu reached the final of the IBSF Under 21 World Championship, in Taupō, New Zealand.

[1] Liu was the first Chinese player to qualify for the final stages of a ranking tournament, the 2004 Welsh Open.

To get to the tournament, Liu played four qualifying matches, the fourth against Fergal O'Brien.

Liu's best performance in a ranking tournament to date has been in the 2007 Grand Prix, where he reached the quarter-finals, where he lost to Marco Fu again, 0–5.

Liu finished the 2011/2012 season outside the top 64, therefore he would be relegated from the main tour and dropped from the world rankings.