This is a visual database of ethnographic data on the social and cultural custom of Chinese in southeast coastal regions including Hong Kong and mainland provinces such as Guangdong, Hainan, and Fujian, which was observed mainly in the 1980s to the early 2000s. All data were collected by Masahisa Segawa thorough his anthropological fieldwork in this area. It comprises three parts: (1) Photographic data on the rituals, daily custom, hamlets, architectures and living tools, as well as the landscapes surrounding them. (2) Total or partial copy of genealogical books compiled and reserved by local lineages in Hong Kong and Southeastern China. (3) Copy of 1:1000 Village maps edited by Hong Kong colonial government in 1980s. It contains many images of the ancestor worship rituals, seasonal ceremonies, and other customary activities of Han Chinese and other ethnic minorities in this area in the late 20th and the early 21st century and also contains the genealogical information of local lineages in the area. Due to the inclusion of personal information, this collection is not publicly accessible. If necessary for academic research, you can apply for access and if permission is granted, you will be able to view it within the Center for North Asian Studies, Tohoku University (though the scheme is currently under development).