"Michael was just too good today. Even if I played well I don't think I could have caught him," said Liang, who won 102,000 dollars.
Australian Anthony Brown and Taiwan's Hsieh Tung-shu finished in a tie for third, nine strokes behind Hendry, after shooting rounds of 70 and 71 respectively.
Thailand's Thaworn Wiratchant, winner of this event in 2005, was a stroke further back with Singaporean Mardan Mamat and Ronald Harvey from Canada.
Thaworn carded a 68 while Mamat shot a 71 and Harvey returned 66.
Japan's Shingo Katayama, a five time winner of the Japan Tour Money List, finished in a tie for 12th. He closed with a 70 to finish the tournament on five under par.