[2] 'Kau Sai Chau', the transliteration of the Chinese name through the Hong Kong Government Cantonese Romanisation system, was later adopted as its English name.

[3] Kau Sai Chau is connected in the north by a breakwater to the smaller island Yim Tin Tsai.

It has a maximum elevation of 216 m.[4] Kau Sai Fishermen Village is a small fishing hamlet with about ten houses.

[6] In 1952, Hakka farmers and shopkeepers of Kau Sai Chau were required to relocate, because the place was located in the centre of a large area of sea about to be designated as a military firing range.

The villagers were resited to Kau Sai San Tsuen, off Hiram's Highway at Pak Sha Wan.

[7][8] Two declared monuments of Hong Kong are located on Kau Sai Chau: a prehistoric rock carving and a Hung Shing Temple.

The Hung Shing Festival (洪聖誕) is celebrated there every year on the 12th and the 13th days of the second lunar month in Chinese calendar.