The ancient town of enyang is located at the intersection of the two waters. Downlink to chongqing, even Shanghai. "Thousands of masthead lights shine on en river, only the sail can not see the wave" is the true portrayal of enyang prosperous water transport at that time.

Due to water transport developed, grace Yang becomes qinba mountains supplies foreign trade port, even supplies distribution center in northeast sichuan, the Ming and qing dynasties, grace Yang town resident population of 10000 people, and often have more than 3000 businessmen from this, the size of more than 150 firms, salt shop 19, restaurants for more than 60, inn, teahouse, restaurant, more than 50 vendors more than 200 firms, once merchants operating, travelled, every season, rising waters often moored at the elements with hundreds of merchant ships. These ships passed through the nanjiang river to chongqing, carrying our materials from the dabashan mountains, such as tremulus, agaricus, fur, cotton, silk, wood, coking coal, etc., as well as industrial products and seafood from the coast, which were sold to gansu and shaanxi through enyang. That is, to transport the materials and people from the mountains to the mountains, and to load the civilizations and merchants from the mountains into the mountains, so no matter going back and forth, these people have to stay in enyang for the night.

The busy water transportation in enyang has promoted the splendid culture and economic prosperity of the ancient town of enyang. Therefore, the ancient town of enyang has also gained the reputation of "little Shanghai", "little chongqing" and the saying of "early and late enyang river", and has become one of the most prosperous market towns on the ancient road of rice cang.