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简介：As far as the operation of Xishan Coal Mine is concerned, the bidding and contracting system has achieved excellent results. The court does not participate in the operation, only supervises it, and there is a fixed income every year. Although it doesn't seem like much, it is a trickle that enriches the national treasury without disturbing the people. At the same time, it also eases people's livelihood, increases employment, and stabilizes society.