Qian Fang Jiangfengshui

What is Jiang Jingfang's statement of geomantic omen? -From the point of view of hydromechanics, because of the river flow, it can drive the air to flow and circulate, that is to say, it can drive the harmful gas circulation produced by human activities to other parts, thus renewing the fresh air suitable for human beings and benefiting human physical and mental health. In general, gases harmful to human body such as dust and carbon dioxide are relatively more important than oxygen beneficial to human body. From the enlightenment of rural indigenous steaming, it can be concluded that the law of gas-liquid circulation has the characteristics of "heavy and frivolous" That is, the relatively harmful and heavy gas stays on the surface near the ground, that is, the human activity floor just in the bungalow. The characteristic of air propulsion is "wind". In the absence of wind and relative stillness, harmful gases only stay at the level of human activities, which will inevitably have hidden and direct harmful effects on human health. Rivers are the lowest places in all geographical locations, and harmful gases are first enriched to the lower places of rivers under the impetus of aerodynamics. The flow of river water only plays a basic role in taking away the harmful gas at the bottom, like air filters and aerators, supplementing fresh air beneficial to human health. Rivers are air filters and ventilators for earth activities. The fact is: in the long historical process of human activities, in places where the population growth is obviously faster and the population density is higher near big rivers, besides the convenience and benefit of water conservancy, the role of invisible air circulation phenomenon and the role of air filters and aerators can never be ignored or underestimated. Realistic rural areas can also prove that under the condition of secret congestion in rural areas in river areas, the birth rate is not necessarily low, but the survival probability of the population is low, and the elimination rate of natural pottery is high. The cumulative population in several years is relatively lower than that in river areas. Rivers are densely populated, and the power of rivers to promote air circulation cannot be underestimated.