Chapter 57: Level 7 Big Bonfire!

```

[Ice Crystal Stone] was also a widely used material, useful in the early, mid, and late stages.

Moreover, as the game progressed to the mid-stage, a crucial defense building required a large quantity of Ice Crystal Stones.

Cao Xing nodded in satisfaction, then put it away and glanced at the countdown overhead.

[Time until darkness: 0 hours 50 minutes.]

[Current temperature: -61℃]

The temperature was getting lower and lower.

At this moment, there was still some time before it was completely dark, so Cao Xing needed to use this time to build a shelter for the mammoth.

And for the four robots, they also needed a place to shelter from the wind and snow.

In extremely low temperatures, even machinery would not be able to withstand it.

Thus, Cao Xing took out the [Medium Shelter Construction Plan] from his backpack and directly clicked on learn.