Liang lost in qualifying for both the Wuxi Classic and the Shanghai Masters to Rod Lawler. He reached the venue stage of the Australian Goldfields Open by beating Thanawat Thirapongpaiboon, but lost 3–5 in the first round against Matthew Stevens.&lt;ref name="2012/13"&gt;.&lt;/ref&gt; Liang beat Anthony McGill and Andrew Higginson to qualify for the UK Championship, where he saw a 4–3 lead in the first round against Barry Hawkins turn into a 4–6 defeat. Liang failed to qualify for the next two events, but won two matches to enter the main draw of both the Welsh Open and the China Open. In Wales he lost 2–4 to local favourite Stevens in the first round, and in his homeland of China he beat Lu Ning 5–1 in the wildcard round, before losing 3–5 to Stuart Bingham in the first round. Liang had a very consistent season in the Players Tour Championship series as he advanced to, but not past, the last 16 in five of the ten events. This saw him placed 27th on the PTC Order of Merit, one spot short of making the Finals. Liang's season ended when he was beaten 6–10 by Mark Davis in the final round of World Championship Qualifying. His end of year ranking was world number 32.