The gold coin was placed in a transparent rectangular crystal box on the desk of the study room. It appeared to be an ornament. Since it was a bit special, it was put in the crystal box.
Zhang Tie was very familiar with this gold coin because it was one of the standard gold coins that the government of Taixia Country authorized Pangu Bank to produce. The positive side of this gold coin was the vivid and delicate image of Rate Bridge, one of the 12 bridges across Goldenwater River of Xuanyuan Hill while the back of it was an image of an open peony and the words "Pangu Bank".
In Hua culture, rats could gather wealth. Water of Goldenwater River and open peony also meant wealth.
In Taixia Country, there were over 100 kinds of legal gold coins. It was one of them. Zhang Tie got a large number of gold coins of the same kind.