By the end of January 2002, the concept of “Regional Express” gained further development. Tsang in Beijing to attend the “Mainland and Hong Kong SAR major infrastructure coordination meeting”, and with the State Development Planning Commission and the relevant ministry officials, the talks were initially on Regional Express railway line connecting Guangzhou, Shenzhen and Hong Kong, focussing on the design and coordination of consensus between the parties. The central government officially approved research and co-ordination by the Ministry of Railways, and officially named this railway the "Guangzhou–Shenzhen–Hong Kong Express Rail Link". With a formal agreement with the Hong Kong SAR Government, decided by the Ministry of Railways, led the establishment of an expert group to study the construction of the Regional Express high-speed rail line.
