...That's right, isn't this mountain peak the one that appeared suddenly?
In one night, it rose from the ground and appeared suddenly.
Wait...rose from the ground?
Xu Xin seemed to understand something.
Could it be...that this place is originally an underground city?
It's just that, because the entire stone pillar mountain rose from the underground, it brought part of this underground city out?
...Yes, that must be it.
This also explains why the environment here suddenly changed.
He never expected to be exploring an underground city on top of Xue Feng, over three hundred meters high.
Standing still in place for a long time, Xu Xin felt as if he were about to be frozen stiff by the low temperature here.
He buried his head in the snow fox scarf, took a breath, and then reached out to push the frozen door in front of him.
At this moment, the door was sealed tightly by the ice and couldn't be easily opened.
With no other choice, Xu Xin could only apply more force.
