Yongchuan district. According to the news from official website, Chongqing Municipal Government, Chongqing's three-city co-creation plan will be implemented in Yongchuan District of Chongqing on 20 18, and Yongchuan District will be built into a national civilized city, a national sanitary city and a national ecological garden city. In order to realize that building a high-level city is an important carrier and foundation to promote high-quality development and create a high-quality life, Yongchuan District is a region jointly created by the three cities of Chongqing.