The chaundong river is formed by the gravitational force of the celestial bodies and the centrifugal function of the earth's rotation, as well as by the special terrain on the edge of the chaundong river. From 16 to 18 august, the sun, the moon and the earth were almost on a straight line, so the gravity of the sea water, the gravity of the centrifugal movement of the moon, the gravity of which was the greatest, combined with the earth's own deflection angle and the rotational movement, increased the tide of the sea water. Hangzhou bay, where the chandong river enters the sea, has a horny, small stomach, and when a large number of tides come in from the kong river, because the river is small and the water does not rise evenly, the river will be pushed forward and the layer will pile up, creating a surge。
In addition to this, the south-east wind is common along the coast, and the direction of the wind is largely the same as that of the current, which fuels the tide. The chandong river, located in our province of zhejiang, was finally injected into the east sea, and the tide of its entry into the sea is known as the chai tong tide。
Before the tide arrives, a small white dot emerges from afar, turning it into a silver thread, accompanied by a thunderstorm, which rolls over. Little time has been given for people to react, and the blistering tide has swung, peaking at 3-5 metres, before the waves, a layer of piles, like a long white tape, with a large mountain-to-sea run。
Every year, on august 15th, the chai tong river is the largest flood of water, which can reach a few metres. On 18 august, the agricultural calendar visited the water forces in chandong river and later followed the practice. With the exception of the three days that have passed since august 18th, the calendar is marked at the beginning of each month and can be used as a “tracing tour”。
