宜黄县潭坊乡是个养蚕的古镇。过去这里蚕丝遐迩闻名。考其历史,远在刘宋(指南北朝刘裕建立的宋朝)时期就有谭氏刺桑的记载。其《儿修宗谱序》云:“刘宋之世,予始祖衍昌公登进士任主爵都尉。始家于湖南谭州杏树下。继徏抚州宜黄观上。观上有树名桑者,时刺谭于其上。不觉桑渐大,而谭亦随大焉。于是时定其方察其向。见左有青龙之形,右有白虎之象。乃欣然喜曰:此地乃吾安身之所。”后来谭氏子孙称 Lake Township, Yihuang County, a sericulture town. In the past silk is famous here. Examining its history, dating back to the period of Liu Song (Guide to the Song Dynasty founded by Liu Yu in the Northern Dynasties) Its pedigree genealogy says: “In the world of Liu and Song dynasties, we proclaimed the first ancestor Yanchang Changjin as Juggernaut Du Wei and started his family under the almond tree in Tanzhou, Hunan Province. Sang, when the stabbing Tan on it. Sang Sang increasingly large, and Tan also with the big yan. So when the set its square to look at the left dragon there is the shape of the right there is a white tiger. Is my place of shelter. ”Later, the descendants of Tan said