THE son of 80-year-old canopy collapse victim Tsui Mo-yee was fighting to come to terms with his mother's death last night. Tsui Yau said that despite his mother's age, she had been active and he had encouraged her to keep busy since she retired as a cleaner 20 years ago. ''My sister had a concession to sell newspapers in Aberdeen underneath where the canopy collapsed and my mother would help her for about two hours every day . . . she did it for nothing, because she enjoyed it,'' Mr Tsui said. ''Every day my parents would go for yum cha and then mum would help my sister while she took a break. ''My sister returned just after the collapse and saw my mother. She tried to pull her out but she wasn't moving . . . I think she realised she was dead.'' Mr Tsui said he could not understand how the collapse occurred and his family would pursue the contractor involved in the work to seek compensation. He said work had been carried out for several weeks on the building. ''I want to know how this happened . . . it is not fair that an old woman should die this way.'' Shipwright Tam Bing-nan, 48, his wife Tsang King-ying, 40, and their seven-year-old son Tam Yau-ming were near the restaurant when the canopy fell. ''I heard this crashing sound so I picked up my son and ran,'' said Mr Tam. But his wife was knocked down by the rubble. Mr Tam put his son down on the other side of the road then ran back and pulled his wife out. She had been hit on the head but her injury was not serious. Wong King-man, 45, whose grocery shop is only a few steps away from the newspaper stall, said: ''Mrs Tsui was a nice and kind lady. It was sad that we lost such a good neighbour.'' He added: ''I have heard some residents complain about water seepage in the canopy during last week's rainstorms. They say the concrete must have been weakened.'' The newspaper stall was owned by Tsui Mo-yee's son-in-law, Hui Man-chun, and she usually helped look after the stall with him in the morning.