David is the president and CEO of Digital China Health Technologies Corporation Limited. In China, he is the organizer of a national cancer database which includes information platforms in the National Cancer Center and provincial cancer hospitals, and built the National Population Macro Management Decision Model, approved by the UN. David serves as the Deputy Secretary General of the National Union for big data industry, the vice chairman of the national population medical big data Specialized Committee, and the Deputy Secretary-General of the Cancer Professional Committee on Healthcare Big Data.