Liang, his country's most successful golfer with 18 tournament victories worldwide, joins triple Major winner Padraig Harrington and 2007 LPGA champion Suzann Pettersen as Working for Golf Ambassadors.
"Liang was the first player from his country to play in the Open in 2008," the R&A's Duncan Weir said. "He has led the way for golf in China and will bring a great deal of experience and expertise to his new role.
"The R&A is already working hard with the China Golf Association to encourage people to learn more about golf and its values. Liang will help us to communicate these messages to an even wider audience."
The R&A jointly governs the sport worldwide along with the United States Golf Association and also organisers the Open Championship.
This year's Open will be staged at Muirfield, Scotland next week.
- Sports & Recreation
- Padraig Harrington
- Suzann Pettersen