Mike still insists that this is an ancient tomb, believing this to be a burial passage, and the wall paint should be remnants of murals.
Qinghan and I didn't continue discussing this topic with him, as facts speak louder than words — when the evidence is seen, he will naturally know that his inference is incorrect.
Mike walked with extreme caution, feeling that there would be traps set inside the tomb, whereas Qinghan walked casually, looking relaxed.
Wang Le's conjecture was spot on, as the tunnel inside was winding and not straight, so he said it's hard to judge the length of the passage.
If it was a straight tunnel, you could shout and listen for the echo, roughly estimating the distance.
They are all seasoned veterans, and they have such skills, only if the passage has turns, and not just one, then they are powerless.
I think this tunnel seems to have fallen out of some building, because there is a break at the turn, and outside the break is rock, not building debris.
