After Qin established Zheng Guoqu, he was once rich in the world, and was praised by the ancients as "the land of golden pond and soup, fertile land and abundant land".
At the end of the Qin Dynasty and the beginning of the Han Dynasty, Sean said, "There is a letter on the left and a dragon tree on the right in Guanzhong, and fertile land is thousands of miles away. This so-called golden city is thousands of miles away, and the land of abundance is also" (Historical Records). The above is the earliest writing of "Land of Abundance", which mainly refers to Guanzhong Plain.
Extended data:
There are natural terrain barriers around the Weihe Plain, which are easy to defend but difficult to attack. Since the Warring States period, there has been a saying of "one country, four blockades". Therefore, in the Han Dynasty, Zhang Liang summed up the advantages of Guanzhong with "a golden city of thousands of miles" and persuaded Liu Bang to make it the capital of Guanzhong.
During the Warring States Period, Su Qin told Qin Chen about the plan of "Lian Heng", praising Guanzhong's "fertile land, rich people, numerous chariots, all kinds of industries stormed, fertile fields were thousands of miles away, and accumulated abundance", and said that "this so-called land of abundance is also the best in the world". This is because Guanzhong has become a treasure trove of geomantic omen since Zheng Guoqu repaired it during the Warring States Period.
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