Since the qing period , the town , itself a major producer of handicraft articles , has been the distribution center for goods produced in northwest yunnan , hence the word " gong ben " in the naxi language which means " a place with many warehouses . 大研人还利用城内西河水的高低落差，按时提降闸门，清洗街道的污垢。整个儿一个环卫自动清洗系统。这在今天科技发达的衮衮诸国，恐怕也是想也没想的玄事。
