C421 Farewell, the Heart of Earth.

The supervisors’ task was very simple. They were responsible for weighing and appraising the ores excavated by the miners, and also giving them a little food.

If the miners wanted to survive, they had to work hard to dig. If they could not hold on, they would take the risk to dig deeper into the mine and dig out the Oddity Ore with higher purity.

After all, the purity of the ores was different