The two passages didn't seem different at all, they were both dark tunnels that were lit by torches on the wall, leading right into the darkness.
While Lord Yin had been talking, Lin Fan had actually had Brainy release the ants to scout out the passages with their chemosenses.
The result that the ants gave Brainy was that the passage on the left didn't have any scents coming from it at all, but there was a strong scent of blood that came from the right passage. It wasn't just a faint trace of blood, it was so strong that it almost seemed like there was a pool of blood inside this tunnel.
Just based on this, it was clear which path was the safer path, but what Lord Yin said afterwards changed everything.
