First of all, historical reasons. Gannan is one of the earliest places where Hakkas settled. As early as the Tang and Song Dynasties, Hakkas began to live and multiply here. In order to adapt to the living environment and social structure at that time, Hakkas began to build enclosed houses, forming a unique Hakka enclosed house culture. At that time, due to the limitation of economic conditions and the lack of architectural technology, Hakkas could only choose simple and practical architectural structures, and the structures of Sanhe Courtyard and Siheyuan just met this requirement.
Followed by cultural reasons. Hakka people have always attached importance to family culture and tradition, and the buildings of Sanhe Courtyard and Siheyuan have strong family significance. Sanheyuan represents it runs in the family, and Siheyuan represents four generations living under one roof. This structure can not only meet the needs of family living, but also reflect the spirit of Hakka people attaching importance to family tradition and culture. Therefore, in Gannan, Hakka enclosed houses are mostly in the shape of three-way courtyards and quadrangles.
Hakka art and culture;
Hakka folk songs and tea-picking operas are the essence of Hakka culture (Gannan) performing arts. Gannan is the earliest place where Hakka folk songs were sung. Hakka folk songs originated in Xingguo, Gannan, and the story of "Luo Yin scholar copying songs" in the late Tang Dynasty is still circulating in Xingguo. Gannan Hakka folk songs not only inherit the traditional poetry, but also enrich and develop in people's long-term artistic practice, creating a variety of artistic techniques and forms of expression, with strong local color and fragrant soil fragrance.
Tea-picking opera is a local opera in southern Jiangxi. According to legend, tea songs originated from Anyuan Jiulong Mountain have a long history. Tea-picking drama is humorous, its content is close to the lives of the working people, with few characters and simple props. Compared with other drama programs, Gannan tea-picking drama is cheerful and lively, deeply loved by the masses, and has more vitality, becoming one of the favorite drama forms of Hakka people. Tea-picking opera was born in Gannan, and soon spread to neighboring Fujian, Guangdong, Hunan and other places, with far-reaching influence.
The above contents refer to Baidu Encyclopedia-Gannan Hakka Culture.