How to build Hakka enclosed buildings in my world

The difference between the round dragon house and the round earth building (not to mention other forms of earth building) is that the shape of the round earth building is a perfect circle, and the shape of the round dragon house is an ellipse; The round building highlights the equal relationship of families in living, but the dragon house is orderly and hierarchical; The circular building is a fully enclosed structure, which highlights the defense function; The dragon house extends in all directions, weakening the defense function and highlighting the function of the ancestral temple; Wai House is a kind of house jointly owned by Fulao people in southern Fujian and Hakka people in western Fujian. Longwu, a unique Hakka residence, is recognized by the international architectural community as one of the five traditional dwellings in China.