The black shadow in the lake only existed for a moment before quickly disappearing, and the lake once again emanated a dim light.
As the shadow vanished, the surging Jiuyou Qi also calmed down.
Seeing the Jiuyou Qi calm down, Yu Cheng and the others breathed a sigh of relief.
Yu Xuanyi, with some lingering fear, said, "What was that just now? Such a powerful presence, just a shadow, made me feel an enormous danger."
It's important to note that Yu Xuanyi was an expert at the Immortal King Level; just a shadow appearing out of nowhere made him feel like he could die at any moment.
This goes to show how powerful the other party was.
This also left Yu Xuanyi speechless, as he was clearly already an Immortal King, supposedly among the top beings in the universe.
But after entering the Abyss Ruins, he first encountered the terrifying Jiuyou Monster, and now this dreadful shadow, making him feel like his Immortal King status was merely a facade.
