Will it leak when it rains in the thatched cottage where ancient people lived?

Usually not. In ancient times, thatched cottages were built with "inhabiting grass", which is a tough and smooth grass and is very suitable for building houses.

After the ancient people spread the washed grass on the house, they would smear it with mud and polished building materials and cover it with a layer of washed grass. This cycle will give the house a solid "umbrella".

On rainy days, raindrops fall on the thatched cottage, and the rain will flow underground along the lines of washed grass. Although it is not ruled out that a small amount of rain will seep into the grass, there are many layers of materials below, so the thatched cottage where ancient people lived generally does not leak rain.

In addition, the ancients also regularly inspected and maintained houses. If the roof leaks or the grass is defective, it will be repaired immediately. The life of this kind of straw house can generally be as long as ten years.