A TRIAL has been scheduled this Friday for veteran dissident Fu Shenqi to sue the Re-education Through Labour Management Committee in Shanghai for illegally sentencing him to three years in a labour reform farm. According to Fu's wife, Li Liping, the Huangpu District People's Court will hold a special hearing at the Dafeng Farm in Yancheng District, Jiangsu province, where the 38-year-old activist is held. ''They won't promise me that I can attend the trial,'' Ms Li said. ''They said they would make the arrangement 10 minutes before the trial starts.'' Fu was sentenced by Shanghai police without trial to three years ''re-education through labour'' four months ago for instigating a hunger strike of four other Shanghai-based activists. But the four had denied the charge, saying their action was voluntary and Fu did not take part in any of their activities. Fu filed the lawsuit after the committee rejected his appeal last month. Ms Li yesterday appealed for leniency for her husband. ''I have no intention of creating any trouble for them [the authorities], all I hope is that they can treat my husband and my family in a humane way,'' Ms Li said. Fu will be represented by two Shanghai lawyers who have collected supporting testimonies from the four activists. Ms Li said she was worried about her husband's condition at the Dafeng Farm where he had to labour and meet production targets each month. Ms Li received a letter from him about 10 days ago - the first in three months - in which Fu complained about a ''severe stomach ache'' and asked for medicine. Fu has been deprived of his ''political rights'' and was therefore treated differently to other inmates. Ms Li can only visit her husband once every three months. She said yesterday that the authorities had been spying on her and that she feared for her safety. ''This was what happened to Fu when they arrested him. First, they spied on him and then arrested him on a minor offence of stealing a bicycle. Then they sentenced him to three years in a labour reform farm on allegations he did not commit,'' she said. ''I am terrified that they might do the same to me. What is going to happen to my child if they also sent me to a labour farm.'' She has a five-year-old son. One of the few internationally known dissidents in Shanghai, Fu was given seven years in prison in 1981 for his role in the Democracy Wall Movement. Two years ago, he was again jailed for publishing a journal called Private Voice. He was released last March. In a related development, Shanghai police have increased pressure on other activists, warning them not to step over the line. Informed sources said that human rights activist Yang Zhou was interrogated for five hours last Thursday. A founding member of the Shanghai's Association of Human Rights, Mr Yang was warned not to travel and to refrain from restructuring the association.