What are the main building materials of Fujian Tulou, what are their effects and what are their functions?

It is made of raw soil as the main building material, mixed with fine sand, lime, glutinous rice, brown sugar, bamboo chips, wood strips and so on. After repeated kneading, frying and squeezing. The roof is covered with fireproof tiles, which can be used for a long time. When tamping the wall, bamboo strips are put into the wall as current reinforcement. Because bamboo strips are hard and elastic, the overall performance is good. When an earthquake occurs, the bamboo strips in the wall will be straightened, making it difficult for the wall to collapse. After that, the bamboo strips will be naturally folded back by the centripetal force of the circular building, achieving a good seismic effect. After repeated rubbing, ramming and pressing, a thick and dense wall was built, which can prevent the typhoon from invading, and the soil guns and cannons can't get in, which plays a role in defending the enemy and can also play a role in heat insulation. Of course, glutinous rice is added to increase the viscosity and make the raw soil stick together after drying to form a whole.