《文献通考》一书中记载:“昔日皇帝始经土设井以塞争端……使八家为井井开四道.而分八家,凿井于中,一则不泄地气,二则无费,……九则有无相贷,十则疾病相救……即牧于邑,井一为邻,邻三为朋,朋三为里,里 ”Document pass test“ a book reads: ”In the past the emperor set up the soil to plug the dispute ... so that eight for the well to open four. And divided into eight, sinking in, one is not venting gas , Two are free of charge, ... ... there are nine phase loan, ten disease ... ... that the animal husbandry in the eup, well-neighbors, three for friends, friends for three years, where