If I'm not mistaken, the 'big guy' the Water Monster mentioned should be the power source of this tomb.
Boss Lu found it but didn't know how to stop it, after all, no one can dismantle an operating engine.
Initially ditching Qinghan might have been a test of how much he knew about this tomb.
If Qinghan knew nothing about this tomb, he couldn't possibly walk out of the maze passage, making his life and death insignificant.
Once he walks out of the maze passage correctly, it means he understands this tomb.
Of course, there's also the possibility that Miss Scream cried so hard in the passageway that they accidentally discovered the way out.
But that probability is too small, and Qinghan doesn't seem like someone who survives by luck.
Boom——
My mind suddenly felt a vibration, then the entire cave shook a few times, the snakes went crazy again, they scattered and fled in panic, slithering and crawling away in all directions.
