What is the reason for thatching most of the roof slopes of the inhabitants of the Smolawa village?

Legend has it that Wa ancestors got inspiration from swallows making nests out of grass and therefore made roofs out of thatch. In order to thank the swallows for their guidance, they set up a log on the upper floor for the swallows to make their nests, and set up rules: they were not allowed to dig out the swallows' nests, not allowed to drive the swallows away, and not allowed to shoot the swallows. The shape of the roof is the so-called "Kongming Hat", and thatched roofs were mostly seen before the 1950s. Thatch bundled into rows, rows of staggered feet to stack. 50s after the change to use the end of the Maine tile with hooks, hanging on the bamboo hanging tile, layers stacked on top of each other. With the Yi people's soil palm house, the Bai people's stone house has a big difference.

Wa architectural culture is an important part of Wa culture. Wa people have been living in mountainous areas for a long time, and their architectural style is better adapted to mountain dwelling. The creativity of the Wa people is very great, and the Wa people have created their own unique architectural styles that are adapted to the mountainous areas - "dry-rail type" and "floor-standing type" bamboo buildings - in the course of the long history of the Wa people. The Wa people have long been practicing slash-and-burn agriculture, and they often need to migrate due to climatic and geological reasons. In addition, the building materials for residential buildings are very easy to obtain, so they are relatively simple to build and have to be rebuilt every three to five years. However, this building can resist insects and snakes, but also moisture and humidity to avoid floods, due to the material and structure of the reason, but also conducive to ventilation and heat dissipation. Because of the shape of this building was umbrella cone, was figuratively known as "Kongming hat" and "chicken cage". The roof is covered with grass, the corner of the house is decorated with cross horns, from a distance, it looks like a big gourd with two small horns inserted on the top of the gourd, shaped like an ancient warlord's hat and won the name of "Kongming Hat", and the top of its umbrella cone shape is curved, which is a perfect combination of gourd shape and pagoda shape, and its structure is unique for the ethnic minorities of China's residential houses, and the corner of the house is also a unique Chinese residential architecture in the cross horns of the Totem Worship decorations. Its structure is unique to Chinese ethnic minority houses, and the crosses of totem worship decorations at the corners of the roof are also rare in Chinese residential architecture.