Customs and geomantic omen say that the water in the yard is poured backwards. In other words, the front of the courtyard is high and then low, and the water flows backwards. In the rainy season, rainwater flows back into the house, which intensifies the moisture regain of the house. The residence is affected.
Water usually flows first and then asks, so we should respect the laws of nature. Most of the water in the yard flows to the front of the yard. So the water in the yard will flow out.