In ancient times, there was a saying that "Yang Yi Er", which meant that Yangzhou was the first and Yizhou was the second. Besides Yangzhou, Yizhou here refers to Chengdu. So why do you say "Yang Yier"? Why are they named?

First of all, Yangzhou, in the late Tang Dynasty, was the economic center at that time. At that time, a nationwide transportation network centered on Yangzhou was formed. Since the successful construction of Tongji Canal, Yangzhou has become an important land and water transportation hub. Merchant ships from the south first went to Yangzhou and then to Chang 'an and Luoyang, then political centers.

Because of the convenient transportation, businessmen travel to and from Yangzhou, which makes the local commodity trade economy very developed. Yangzhou is located in the Yangtze River Delta, with a superior geographical position. The Yangtze River Delta is also very rich. Coupled with the convenient transportation in Yangzhou, Hangzhou has become the center of Jianghuai. Ships pass through Yangzhou, which is already rich in all kinds of bronzes, seafood, brocade and silk, and its products are also very rich, so Yangzhou ranks first.

Then talk about Yizhou, Yizhou is now Chengdu. Yizhou has been called the land of abundance since ancient times. Because Yizhou is located in the upper reaches of the Yangtze River, Yizhou can reach many places along the Yangtze River. Therefore, there are also merchant ships that often travel to Yizhou. In addition, Yizhou is located inland, and the terrain extending in all directions makes the traffic more convenient.

Due to the irrigation of Minjiang River, the soil in Yizhou is very fertile, which leads to the development of local agriculture and rich silk products. Shu brocade was the most famous at that time. Fertile soil also leads to very rich products and abundant food production. Therefore, Yizhou also became the economic center of the inland areas at that time.

This is the saying of "Yang Yi Er", hence the names of Yangzhou and Yizhou.