三楚是指先秦时期楚国的疆域,分为南楚、东楚、西楚。南楚是最早形成的,春秋时期,由于楚国位于中原南部,所以中原各国称其为“南楚”“南蛮”。春秋末期,吴、越争霸后,越国胜利,占领江苏、浙江两省(徐州除外),战国时期,楚国灭越,占领吴越地区。由于这块新的领土,在故地东面,所以称为“东楚”。楚国衰落后,首都郢都被秦朝攻克、毁坏,为了躲避锋芒,楚人东迁,其时南楚故地已经不 Three Chu is the territory of Chu during the pre-Qin period, divided into South Chu, East Chu, West Chu. Chu was first formed. In the Spring and Autumn Period, the Central Plains states called it “Nanchu” and “Nanban” because the Chu State was located in the southern part of the Central Plains. In the late Spring and Autumn Period, after Wu and Yue dominated the hegemony, Vietnam succeeded and occupied Jiangsu and Zhejiang provinces (except Xuzhou). During the Warring States Period, the Chu Kingdom destroyed Vietnam and occupied the Wu-Yue area. Because of this new territory, in the east of the site, it is called “Dong Chu.” After the fall of the Chu State, the capital was severely beaten and destroyed by the Qin dynasty. In order to evade its edge, the Chu people moved eastward.