Tsing Yi , sometimes referred to as Tsing Yi Island , is an island in the urban area of Hong Kong, to the northwest of Hong Kong Island and south of Tsuen Wan. With an area of 10.69 km², the island has extended drastically by reclamation along almost all its natural shore and the annexation of Nga Ying Chau (牙鷹洲) and Chau Tsai. Three major bays or harbours, Tsing Yi Lagoon, Mun Tsai Tong and Tsing Yi Bay (青衣灣) in the northeast, have been completely reclaimed for new towns.