Yang Chen witnessed the experimental process.
Unfortunately, it was just as the professor said.
The Blue Cave was practically a devouring pit where any animal entering it could not survive long-term.
Neither freshwater fish nor marine fish could survive in the Blue Cave.
Actually, this phenomenon was something even the professor couldn't figure out.
Clearly, the Blue Cave is rich in various minerals and has a high oxygen content, which is very suitable for biological survival. At most, there could be cases of oxygen intoxication.
But strangely enough, no creature could survive in it, which felt very odd.
Finally, Yang Chen proposed whether it could be possible for a human to enter, to test if humans could survive in the environment of the Blue Cave.
