Mr. Choi is well-known in both local and overseas Chinese communities for his invaluable contributions to the preservation and development of traditional Chinese folk culture (especially geomancy). His almanac has been widely adopted by Chinese people around the world. Mr. Choi has established the Hong Kong Shun Lung Yan Chak Foundation, which supported the construction of two hospitals in rural areas of Guangdong, as well as a number of nonprofit schools in Hong Kong, Yunnan and Cambodia. Mr. Choi is a staunch supporter of CUHK and has made generous donations to the University and Wu Yee Sun College to provide scholarships and bursaries, support for student internship programmes, the I‧CARE Programme and professorship schemes, and for the purchase of equipment.