Liang was heavily beaten 2–8 by Thepchaiya Un-Nooh in the final of the 2015 Six-red World Championship. In the third round of the UK Championship, he took advantage of a collapse from Judd Trump to win 6–4 after trailing 1–4. He then saw off Tom Ford 6–5, after which Ford accused Liang of "boring him off the table" with slow play. Liang responded by opening his quarter-final match against Marco Fu with three centuries and hung on to edge it 6–5, then came from 2–4 behind to reach the final by beating David Grace 6–4. It was the first final in the history of the event to feature two players from outside the United Kingdom; Liang lost the match 5–10 to eventual UK champion Neil Robertson. A week later, he progressed to the semi-finals of the Gibraltar Open, but was whitewashed 0–4 by Fu.&lt;ref name="2015/16"&gt;&lt;/ref&gt;