Some Fujianese migrants had trouble mixing with neighbours and often did not fit in with other members of the community, social workers and neighbours said. They were speaking after the migrant Chan family died in an apparent murder and attempted suicide in Tsuen Wan yesterday. Chan Ying-cheung, 41, is thought to have drugged two tenants, wife Ng Suk-yee, 29, their two children, Chan On-yee, six, and brother Chin-bong, three, and a 21-year-old son from an earlier marriage before gassing them. Neighbours said the Chans seldom spoke to other people except for an occasional morning greeting. They had moved to the 492-square-foot two-bedroom flat in Tsuen Wan Centre about two years ago and had not made any attempt to meet neighbours. Mrs Ko, who lives one floor above the Chan's home, said that the couple did not speak Cantonese. 'I occasionally came across the woman in the lift. She was quite nice but recently she and her husband had a quarrel in the lift. They did not speak Cantonese.' Another neighbour said she often heard the Chans quarrel at nights. She said the other three men living in the flat did not speak Cantonese either and most neighbours thought that they were new immigrants. Housewife Mrs Ho Lai Lai-chun, 26, who lives in the flat below the Chans, said: 'The family had lived here for a few years. 'It seemed the woman [Mrs Chan] was a nice lady. She went to work everyday after taking her children to school.' Mrs Ho, who has been living in her flat for six years, said: 'I guess the man [Mr Chan] was unemployed. I sometimes saw him taking clothes to the laundry in the afternoon. 'I last saw the couple last week when they were going out with their children. They seemed all right that day,' she said. Estate manager, Kai Shing Management Services, said Fujianese had been hired as security guards so they were able to communicate with residents. A spokesman said: 'It is a big estate. And it is not too surprising one or two residents might cause some troubles. But largely the security here is all right.' A social worker from the Caritas Community Centre in Tsuen Wan, Wong Chi-hung, said a lot of Fujianese who did not speak fluent Cantonese lived in the district. 'About 70 per cent of the new immigrants who came to us for advice are Fujianese. Many children from the Tsuen Wan Centre take part in the centre's interest groups. The estate is better than other popular accommodation where most new migrants live,' he said. He said the Fujianese, because of the language barrier, tended to live near each other for mutual support and rely on relatives and friends.