Five Emperor Coins.
The Five Emperors referred to the emperors of the East, South, West, North, and Central directions.
The Five Emperors of the Holy Region originally referred to the Heavenly Emperor of the East, South, West, North, and Central directions. They were the Eastern Green Emperor Ling Weiyang, the Southern Red Emperor Chi Biaonu, the Central Yellow Emperor Han Shuniu, the Western White Emperor Bai Zhaoju, and the Northern Black Emperor Zhi Xianji. They were the five deities of the five directions and were divided into five colors and five elements: metal, wood, water, fire, and earth, corresponding to white, green, black, red, and yellow.
On Earth, there were also legends of the Five Emperors, which represented the five supreme emperors.
These Five Emperor Coins also had many derivative magical artifacts of Little Five Emperors. The one that Hua Tian had obtained previously was one of them.