TAXI driver Mr Law Chung-wai smiled politely as he accepted $100,000 yesterday, but there was little disguising his suffering since his wife was gunned down by an AK-47 during a Mongkok robbery. The money was the first payment from the newly-founded Fund in Aid of Victims of Jewellery Shop Robberies, set up by the owner of Tse Sui Luen goldshops. Mr Law's smile was recognition that people in the community cared. But the horrible memory of a brazenly calm gunman standing in busy Nathan Road last month taking occasional pot-shots from his AK-47 rifle is shared by Hongkong citizens. One of those shots struck Mr Law's wife, Ms Fung Wai-lin, 38, in the head, killing her. Another shot wounded a policeman. The cheque presented by a trustee of the fund, Legislative Councillor Dr Leung Che-hung, and Mr Tse Sui-luen was intended to relieve the pain. ''The money can never replace my wife. I keep hoping it is a dream and that I will wake up,'' Mr Law said. Since her death, Mr Law, 40, has worked longer hours at the wheel of his taxi and has begun repairing the car on his day off. He said he spends the rest of his time wondering why his wife, a nurse, was killed. After being married for four years, the couple were preparing themselves for a child. Ms Fung was going to the doctor's office for a checkup when she was caught in the firing line. ''I am just keeping busy to avoid feeling the pain. It may be fate, but we had planned to have a baby this year,'' Mr Law said. ''It has been difficult trying to live my life. She used to do all the bookkeeping and everything was in her name. ''I cannot even get money out of the bank. I am just waiting for things to settle down a little.'' The money will help to pay for the funeral. Mr Law planned to repay his elderly parents and mother-in-law and then donate the rest to charity. ''I am hopeful that someone less fortunate will benefit, especially those who need it the most. If this fund succeeds, then it would be good. I just want to give it back to society and repay them for their kindness,'' Mr Law said. The TSL Fund began with a million-dollar contribution by Mr Tse. Other members of the board of trustees include Legislative Councillor Mr Stephen Cheong Kam-chuen, former Law Society chairman Mr Donald Yap, senior accountant Mr Yu Kar-kui, and the chief executive officer of Paramount Printing Group, Mr Albert Cheng Jinghan. Money will supplement the compensation already offered by the Government through the Criminal and Law Enforcement Injuries Compensation Scheme. The scheme handed out a record $6.77 million in compensation to victims injured in criminal or police cases in the 12 months to March 31, 1992. A Social Welfare Department spokesman said funeral expenses would most likely be reduced if a payment was made by the TSL fund.