“If the water level is low, the potential will slow down; if the potential slows down, the sand will stop; if the sand stops, the river will be full. Therefore, a dike should be built to contain the water. The potential of the water will be strong, and the silt will be washed away, so that the water will not overflow on both sides.” Fang Yushan first discussed with Yao Chen, came up with a general plan for harnessing the river, and drew up a preliminary plan before discussing with local officials. Yao Chen will draw a good map, in order to facilitate viewing and understanding, he specially enlarged in proportion, unfolded the size of two tables, hanging in the hall. The silted river section is painted with a red brush, and there are dikes beside the two banks, which is slightly different from the common style at present. Fang Yushan learned the way Yao Chen explained to him before, pointing at the map with a thin stick, so that people’s eyes moved with the thin stick. He was a little unnatural at first, but as the explanation unfolded, his thinking was clear, and he spoke with fervor and assurance. […]
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