 He was concerned that the ill-considered move would undermine the interests of the low-income public housing tenants, especially the elderly ones.He strived in vain to stop the related listing of the Link REIT on the Hong Kong Stock Exchange in 2005.Cheng was appointed by the Chief Executive of the HKSAR for four years to serve on the Independent Police Complaints Council, which is tasked with monitoring the review by the Complaints Against Police Office of complaints against members of the Police Force.