In this paper, a representative Hakka settlement in extended hilly area of southern China-Yanling County in Hunan, is taken as an example to extract gene features of Hakka cultural landscape by using feature extraction technology from the angles of residential buildings, traditions and customs, local dialects, patriarchal system, and folk beliefs. The results show that: 1) The residence of the Hakkas in Yanling county is open castle of clan with blood relationship, where the residents may have intermarriage relation with local ethnic minoriti...