The seventh travel notes, Taoism is natural, and heaven and man are one ~ Dujiangyan

Dujiangyan is close to Qingcheng Mountain. Li Bing's construction of Dujiangyan follows Taoist thought, "Taoism is natural" and "harmony between man and nature". Qingcheng Mountain is one of the main cradles of Taoism. I don't have any specific textual research on whether Li Bing's thought of water control is related to Qingcheng Mountain, but I feel that the two places should still be closely related.

Looking at Dujiangyan, you will sigh the wisdom of the ancients. The fish mouth, sand weir and bottle mouth are designed integrally; Divided into two, divided into four, divided into eight, layers of diversion, slow down the water potential, is also so good; According to the normal progress, it will take 30 years to complete the project, because it only takes 8 years to pour hot water and cold water on rocks by using the principle of thermal expansion and cold contraction. From the perspective of modern people, the design is still very clever. There are no dikes on both sides, and there are no dams to stop water. But along the flow direction of water, guide the direction and flow direction of water. In dry season, 60% water enters inland rivers and can be used for irrigation; In the flood season, 60% of the water is in the Minjiang River, which reduces the flood disaster. It is this ingenious design that washed out the Chengdu Plain and created a land of abundance.

In fact, we should also have more Taoist thoughts. Look down on gains and losses, success or failure, fame and fortune, official positions and money, take advantage of more, borrow more, take less, haggle less and not calculate. In the end, you can only count yourself. Hard work is necessary and necessary. We should try to do something to enrich ourselves and not suffer physically and mentally for pretending to be famous at home.