 He was appointed managing director of the bank two years later, and when his father Wee Kheng Chiang, founder of United Chinese Bank, retired in 1974, Wee succeeded him as chairman.His son Wee Ee Chong succeeded him as chief executive officer of UOB.His mother was the second wife of Wee Kheng Chiang, businessman in operating in Sarawak who was a Hokkien from Kinmen island.