The structure techniques used are quite interesting, for the fundation they used a of large rounded stones from the local river, filled out with smaller stone. In this frost-free region the foundation's function is purely to support the weight of the building. Meanwhile, for the base was built normally 60-90 centimetres high, is also of large stones, the largest of which are placed at the core of the wall. Both sides are plastered with clay. And for the outerwall the terre pisé technique, labour-intensive but cheap, is widespread in China. The erection of such high walls requires fine sedimentary mud from the rice fields, the very same mud that makes for a rich and productive agriculture. Maximum strength is obtained if each layer is allowed to dry slowly and completely before the next layer is applied. The wall is further strengthened if allowed to dry gradually, before the next layer is built on top, and the wall is reinforced with split bamboo canes or, in the case of corners, L-shaped cedar branches. The outer wall leans inward to counteract the outward forces and in the case of the circular tulou aids the support of the cantilevered wooden construction, The pressure also increases the wall's resistance to erosion. In the past all the tulou in the locality were whitewashed. This protected the facade against rain, and also reflected solar heat, helping to reduce overheating, a useful effect in the south Chinese summer.
These structures are the perfect example of sustainable architecture because they are built of local, natural materials with simple techniques. Also have good thermal attributes, with the massive earthen walls to help buffer temperatures, another important point is that the chinese built this to last generations, and house many of the necessities for life. They embody a communal life style that conserves energy and resources; these represent a form of ancient co-housing. Some of these vernacular structures were constructed of cut granite or had substantial walls of fired brick. The end result is a well lit, well-ventilated, windproof, earthquake resistant building that is warm in winter and cool in summer.