黄淮流域在东汉末年的军阀混战中．社会经济遭到空前的破坏，百姓遭屠，土地荒芜，幸存者被迫离乡背井，流落他方。可谓“名都空而不居，百里绝而无民者，不可胜数”（《后汉书·仲长统传》），“白骨露于野，千里无鸡鸣”（《曹操·蒿里行》）。这种悲惨景象的出现。是长期战? Huanghuai Valley in the warlord melee in the late Eastern Han Dynasty. Unprecedented destruction of the social economy, massacre of the people, and deserted land, survivors were forced to leave their homes and land on the other side. It can be said that “names are empty but not inhabited, and there are no people in hundred miles who can never be counted” (“the Later Han Zhong Zhongyuan Biography”), “The bones are exposed in the wild, thousands of miles without crows” ("Cao Cao Artemisia line )). The emergence of this tragic scene. Is it a long-term battle?