As for how Chaos knew about this news, it's a fairly simple story. When Jiang Chen went to the Five Elements Secret Realm, he had already allowed Chaos to secretly spread the news, using Creation Elixir pills to collect the bodies of the Divine Race.
At first, the effect was minimal.
But suddenly one day, a large group of people came to Chaos with the bodies of the Divine Race, seeking to exchange them for Creation Elixir pills.
At that moment, Chaos realized that something was wrong. After inquiring from various sources, Chaos finally learned of the news of the god's fall.
"Damn it, I was still thinking that once I had gathered ten million Primordial Chaos Law pills, I would directly activate the Taichu Divine Sword and give the Divine Sovereign a fierce strike, to split him alive and nourish the Prehistoric Thunder Treasure Tree."