Born in Hong Kong in 1957. ​​

Sai Kit started his photography projects since the early 80s under the  mentor of Mr. Honlam NG and Mr. K.H.CHEUNG; they curated his first group show "Sensitive . Transitive" at 1985. At the same period,  he set up the photography workshop "The Photoventurers Workshop" with other photographers.

Between 1989 to 1990, he travelled to U.K. and France and some of his photography works were collected by the Bibliotheque Nationale of France in Paris.

The "Photoventurers Workshop" was reformed as "The Workshop" after his returned to Hong Kong. From 1993 to 1999, he took part in the editorial of eleven issues of non-periodical visual culture publications issued by "The Workshop" with the sponsorship from the Hong Kong Arts Development Council.

At  2005  the "Photocrafters" workshop was set up. This workshop aims at promoting visual cultural activities in Hong Kong and it held many photography courses and exhibitions.

Three years later, he set up the Out-Focus Group with friends at the Jockey Club Creative Arts Centre in Shek Kip Mei, Hong Kong. Until now, his works have been exhibited in Hong Kong, Macau, PingYao, Tokyo, Toronto and Paris, and some of the works were collected by the Hong Kong Heritage Museum.