"Yang Yiyier" was first blown up by Sima Guang, a Shanxi native of the Northern Song Dynasty who lived and grew up in Sichuan. He claimed to have copied the preface to "Chengdu Ji" fabricated by Lu Qiu, a mainlander who had never been to Sichuan in the late Tang Dynasty. Whether this is the case has not been confirmed.

It is said that this "Chengdu Ji" has long been lost, and perhaps only a few people such as Sima Guang have seen it. History is like this. It is precisely because there is no textual research that lies will spread more widely after hundreds of years. Today's "Yang Yier" is based on Sima Guang's "reference", but Sima Guang himself is "reference", so this "reference" has become today's "historical source", but there is no evidence.

So, is there really a "Yang Yier" in history?

Here, it is a question mark whether Chengdu in the Tang Dynasty was really "December 12" or even whether "Yangzhou" was really in the Tang Dynasty, surpassing the three major capitals of Chang 'an, Luoyang in the east and Taiyuan in the north to become the best in the world. Even if there is a story about Chengdu, it can only represent his personal views at that time and cannot be directly used as "historical evidence." It is not reliable to prove history by history, not to mention the lost "allegedly".

So, what is the historical truth?

Take the most prosperous eight-year Tianbao in the Tang Dynasty as an example. According to the records in Tong Dian of the Tang Dynasty, there were more than 42 million stones of grain stored in the whole country at that time, and the so-called Jiannan Road, including the Chengdu Plain, which is known as the "land of abundance", was only 220,000 stones, ranking only ninth among the ten roads in the country. China has a total grain of more than 63 million mangoku, while Jiannan Road is only 6.5438+0.8 million mangoku, ranking eighth among the ten roads in China! ! It can be seen that the prosperity of Chengdu described in literature is not so exaggerated in real history, or it is simply personal obscenity.

Some people think that Lu Qiu, the first person to praise "Yang Yi Er" in the preface to Chengdu, was only a person in the late Tang Dynasty (847 ~ 860), and there may have been a brief "Yang Yi Er" in the late Tang Dynasty. So what was Chengdu's economic strength in the late Tang Dynasty? According to historical records, during the Huang Chao Uprising, Tang Xizong (873-888) also took refuge in Chengdu, a small border town far from the Central Plains. At that time, because of the Yangtze River shipping in eastern Sichuan, the source of troops was cut off. "The tribute of Jianghuai was blocked by thieves, and the official refused to accept it", which proved that without the grain support of Jianghuai area in the late Tang Dynasty, it was impossible to have the power of Chengdu Plain in western Sichuan to supply the court.