Following the invitation of Vietnam Institute for Water Resources Research (VIWRR), the Chinese delegation from Hangzhou Regional Center for Small Hydro Power (HRC) headed by the deputy director of Nanjing Hydraulic Research Institute (NHRI), director of HRC,Prof. Chert Shengshui, has paid a visit to VIWRR from June 5 to June 9, 2002 to explore the possibility and fields of cooperation.