Why do some rural houses add water tanks at the door? What's the point?

Friends who have been to the countryside may find a problem, that is, many rural people have a water tank in front of them. In ancient times, the water tanks placed outside seemed to be historical materials that could be verified. For example, there is a passage in the primary school textbook called "Broken Tank" by Sima Guang, which contains words such as rockery and children playing on rockery. This illustrates a problem. This water tank is not inside the room, but outside it. Water tanks in rural yards have a long history, but it is impossible to verify when they started.

In rural areas, water tanks placed in the yard are practical and moral vessels. Different places, because of different climate, geography, building structure and customs. Whether to put a water tank in the yard is different from where to put it. For example, there is abundant rain in the south, and many people's houses are built by mountains and rivers. There are ponds, streams and rivers ahead, so there is no shortage of water. Under normal circumstances, there is no need to put water tanks in the yard. People who are far away from ponds, streams and rivers also have the habit of putting water tanks in the yard.

In some wooden houses in the south, because of the need of fire prevention, water tanks are usually placed on the second floor and filled with water, not in the yard. Only put the small water tank, not enlarge the water tank. The number of water tanks is one and there are two. There is little rain and drought in the north, and most schools have water tanks. Except for a few tile houses, the walls around the house are built with red bricks, forming a relatively closed courtyard. In addition to planting a few trees, the yard also planted eggplant, peppers, beans, cucumbers and other vegetables, which is an ideal place to play when I was a child.

In my impression, in addition to one or two large water tanks at home, there are several large and small water tanks in the yard. When I go to other children's houses to play, I usually find several water tanks in front of my house. Later, I learned that this is a traditional habit in our countryside since ancient times. Many folk families attach great importance to geomantic omen. Where are the beds and cabinets at home? What's in the yard? Where can't there be anything? Actually, there are rules. As a major object in rural areas, rural people actually value water more, because the ancients had the habit of taking water as a mascot. Rural people have inherited this culture more, so putting water tanks at home is actually very particular.