Retired science teacher promotes Tibetan dancing for greater cultural understanding For years,Li Guang taught computer science and management.Then two years before retirement,the burly,affable teacher decided to take a new step.He’s still teaching but no longer at the Yanshan Education Institute for Adults in southwest Beijing and no more computer science either.Instead,the 62-year-old is teaching guozhuang,a traditional Tibetan dance also known as circle dancing. Retired science teacher promotes Tibetan dancing for greater cultural understanding For years, Li Guang taught computer science and management.Then two years before retirement, the burly, affable teachers decided to take a new step .He’s still teaching but no longer at the Yanshan Education Institute for adults in southwest Beijing and no more computer science either. Instead, the 62-year-old is teaching guozhuang, a traditional Tibetan dance also known as circle dancing.