Lu Yi had a sudden realization in his heart, but it came as no surprise.
After all, the Tribulation Crossing event of Elder Yu Cheng, Yu Xuanyi, and Elder Yu Yunqing had caused quite a stir, and the nearby forces must have noticed something. With such a commotion coming from the Heavenly Tribulation, it was clear that it wasn't at the Immortal Venerable Level. With a bit of thought, they would have understood the situation.
However, the Yu Family had never intended to conceal this, as having an Immortal King was not something that needed to be hidden.
If it were not for the consideration of the awakening Jiuyou Demon God, the Yu Family would likely have already started a war, seeking to bring more star domains and resources under their control.