"Other than that, this land still contained the power of spacetime. If it's impossible for Kong Yuhen to come, then there's only Huang Quan left."
"Jiang Buyi was almost buried here. The Three Tribulation Eyes were forced out..."
These conclusions were all made after the second true body realized that no one could escape.
Xu Xiaoshou had noticed these traces when he first arrived, but he didn't use them.
Once Number Two came, he crushed everyone. The second true body had no choice but to use this information to analyze opportunities for himself and others.
Based on the traces of the battle left at the scene, not only could they infer the above, but the following guesses could be deduced:
"Huang Quan and Master Siren, or Huang Quan and Xiao Kongtong, all of them wanted to kill Jiang Buyi either separately or individually. Jiang Buyi was forced to use the Three Tribulation Eyes."
