Ye Mo realised. At the spot distribution gathering, there was an aquarius dao essence divine emperor who wanted to challenge him but because of his threats, they backed out for some reason. Now that an an aquarius god rank divine emperor wanted to challenge Qin Xuanji, it was clearly to give him a warning.
Being killed on the god rank challenge stage was something that no one could get revenge. The reason that Gong Xiang dared to attack Luo Qinghe was beause human race was too weak and they had no leader. Now that human race had a leader Ye Mo, they needed a proper reason.
"Then, did the aquarius race dao essence divine emperor attack?" Ye Mo asked.
