C1411 First Clue

While the other side is solving the problem.

Ye Fan started to study the Five Emperor Copper Coin.

This Five Emperor Copper Coin is not what we thought of the Qing Dynasty's Five Emperors. It is the Five Emperors with thousands of achievements and great achievements in the history of China. They are Qin Shihuang, Hanwu Emperor, Tang Taizong, Song Taizong, and Ming Gaozu.

Of course