The further the magma flowed outward, the lower its temperature became under the influence of the external environment. Fortunately, since there was magma everywhere at that time, even if the temperature dropped, the heat of the high-temperature magma would not decrease too much in a short time. As such, Zhou Tian was able to ensure that before surfacing, the high-temperature magma could largely maintain its original temperature.
As a result, under such conditions and with Zhou Tian's control, a large amount of magma erupted from the underground in the form of a volcanic eruption.
Now, Zhou Tian didn't care much about what kind of disaster this volcanic eruption would cause. After all, this place had nothing to do with his power. No matter how much damage his actions would cause to this area, it had nothing to do with him. Thus, as long as his plan could proceed smoothly, Zhou Tian wouldn't care about anything else.