THE infamous Qiandao Lake mass murder case will be the subject of a documentary, a pro-China newspaper reported yesterday. According to the Hong Kong-based Ta Kung Pao, the Zhejiang Motion Picture Production Company hoped that the documentary would prompt people to reflect and draw a lesson from the March 31 tragedy. Producer of the documentary, Han Tao, said that the film would be different from the news footage released by official media. ''We try to look at the causes, short-term and long-term, of the case from the perspective of humanity.'' Mr Han said film footage of the just-concluded visit of the Taiwan delegation to Hangzhou and Qiandao Lake would be included. The footage includes talks between the Straits Exchange Foundation (SEF) and the mainland's Association for Relations Across the Taiwan Strait, the grief of the families of victims, and the activities of more than 100 mainland, Taiwan and Hong Kong journalists. Mr Han said the documentary would be shown in the Zhejiang province. ''We hope that the audience will share the feelings of the families of the victims while giving more thoughts to the misfortune in order to avoid recurrence of the incident,'' he said.