The car drove steadily, Yun Hao, Chu Yan, and Zhao Shishi were enjoying themselves, while not far ahead lay an enormous underground world.
It was a world beneath a massive glacier, which was completely different from the vast expanse of white ice outside.
Here, there were flowers, grass, and the temperature was just like that of the normal world.
In this vast underground world, countless people were training, some were around the same age as Yun Hao and his friends, some were older, and there were even children as young as five or six...
No matter which age group they were from, everyone was exerting themselves to the limit in their training. They were training against humans, tigers over two meters tall, and even battling sharks and other fierce beasts.
Not far away, there was a huge mud pit filled with all kinds of corpses, those of tigers, sharks, pythons, and even more of humans...
