Career
Cheung founded Christfund in 1980, which was re-organised as Christfund Securities Limited in 1987. He began serving in the Election Committee for Financial Services constituency. Between 1997 to 2000, Cheung served a councillor for the Hong Kong Stock Exchange.
Beginning in 2003, he held a non-executive director in multiple holding limited companies including Fuijian Holding, Tongda Financial, and First China Financial.
He was an observer for the Intergovernmental Panel on Climate Change in Hong Kong until 2007.