What's the name of the white dessert at the Huizhou banquet?

It's called a square cake. According to the investigation of eight Chinese cuisines, the white dim sum in Huizhou banquet is Yunling square cake, a special food in Jingxian County, Anhui Province, which is made of glutinous rice, sesame seeds and sugar. Yunling square cake is fragrant and refreshing, and has a sweet taste. Anhui Province, referred to as "Anhui" for short, is a provincial administrative region of People's Republic of China (PRC), with Hefei as its capital, located in the Yangtze River Delta in the east of China.