Even though Wang Ran didn't understand the details of the ancient war, he surmised that the Behemoth wouldn't have recklessly launched an attack on the ancestors. It must have assessed the situation and believed itself to be much more powerful than the ancients to dare to wage war against them.
After all, it was a war between two civilizations, not a decision made on an impulsive thought.
It just ended up being a car crash in hindsight.
"Yes." The Underground Behemoth's response matched Wang Ran's thoughts, and its mood was exceedingly somber, as though it had been reminded of past events, "We had three Sages, while humans had only one Sage. Before we commenced the war, we believed it was impossible for us to lose."
Two kings to four twos, how could it lose?