That's right!
He smiled!
He had vaguely found the door of life for the second level, but what was it exactly? He had to verify it. If his judgment was wrong, he would be consigned to eternal damnation; but if he was correct, then the second level would collapse by itself.
He initially went in a natural reaction, or perhaps it was a common problem that everyone could commit. As the Soul-Devouring Crocodiles were too horrific, and a single glance was enough to send chills and terror down the spine. Everyone would believe that their soul spirit would be broken down by the Soul-Devouring Crocodiles and be eaten up by them!
When humans were facing against such horrific, ugly, and dangerous creatures, they would instinctively feel fear, wanting to put up a defense and escaping. Especially when the soul spirit was such an important thing, everyone assumed that it must never be damage. Otherwise, their future would be done for.