Cao Cao invaded the north and evaluated the whole territory of Hebei for several years. According to historical records, what did Cao Jun dig out of the ground after his great victory? Thinking it was auspicious, Cao Cao was overjoyed Dig up a copper finch.

At that time, people quoted classics as saying that when Shun was born, his mother dreamed of something like a sparrow and gave birth to Shun, so it was a good sign to dig up a copper sparrow. Shun is one of the five emperors, and this kind of flattery is just what Cao Cao wants. Cao Cao has the heart of replacing Han. With this mascot, Cao Cao was certainly overjoyed.

To commemorate this mascot, a bronze sparrow platform was specially built.