บท 425: The Utilization of Energy

On the afternoon of the fifth day, the electric motor stopped working.

In other words, a single Dawn I could provide energy for a large-scale electric motor to work for five consecutive days. If an electric motor didn't run continuously, then its work time could be extended. When the magnetic effect of the copper column was lost, it could be recharged with magic power, which was purely low-consumption, recyclable, and pollution-free energy.