C1552 Program Initiated Revive the Team

When the Ear Bat Demon King's mining efficiency increased, the other Demon Kings naturally heard the news and came. They all needed to get the crystal ball from Chu Tian.

The crystal ball also changed from five layers of mineral reserves to six layers, seven layers, eight layers, and sometimes even higher.

However, Chu Tian still sold all of these crystal balls that did not require much energy