This ditch is a drainage ditch. Rural houses like to dig ditches behind houses, and this tradition has continued in the past and now, because this ditch goes along the corner of the house. About 30 cm deep and 40 cm wide, used for drainage when it rains. If it doesn't rain in this ditch, something will happen to the horn and Johnson who have been soaking in the house for a long time. Therefore, this ditch can not only discharge excess water, but also protect physical strength and physical firmness.
There are no other superstitions about architectural principles. When we build a house in the countryside, the house must be higher than the road outside, otherwise the water will flow backwards. If it's higher, we'll have to dig a drain in our house. This trench is to drain the excess water out of the house, and then use the ditch outside the house to unload the water. In fact, to put it bluntly, I want all unnecessary water in my house to go out and keep it dry. No superstition.
The experience of our ancestors has also become a firm solution. In fact, these are the experiences accumulated by several generations of old people, because it is difficult to build houses in the early days, and they are all adobe houses. If there is no ditch in front of the house, the house will be easily damaged by rain. So with the passage of time and the accumulation of old people's experience, this invention will be created to protect the house.
After reading friends in these cities, do you understand why rural people dig ditches in front of and behind their houses? Although they are all brick-concrete houses now, there is no need to worry about the soaking of rain, but it is difficult to change the habit that has been going on.