Yu Sui let the Five Elements Light Core settle onto Mei Chengyu's freshly changed clothes.
It had shrunk until it was as tiny as dust, almost impossible to see with the naked eye. Without any fluctuations of power, no one would notice it at all.
The idea that a Five Elements Light Core could be separated and controlled to wander about was unheard of among the Nine Schools Practitioners of the Xuangu Continent. It was so incredible they wouldn't dare dream of it.
Yu Sui could feel the power gathered inside her Five Elements Light Core changing every day. The newly formed Five Elements Light Core had inherited that change too. Its power accumulated on top of what came before; it didn't start from zero.
Before, even if her Five Elements Light Core did nothing and simply sat there, someone as perceptive as Lady Su would notice it. But now that it had been upgraded, the more power it gathered, the more easily she could control it with her soul-controlling consciousness. As long as it didn't give off any Five Elements Qi fluctuations, no one would find it.
After being separated, a Five Elements Light Core would, given time, become like the motes of dust in the world around them—impossible to see with the naked eye, yet everywhere. Even if someone noticed it, they wouldn't think anything of it.
It was just a speck of dust.
When Yu Sui had used the Light Core to blast open the door to the Saint Hall, she'd assumed her master wasn't inside. No matter how brazen Mei Chengyu was, he wouldn't shut Yu Sui out while Sage Chang Gen was still in the Saint Hall.
Yu Sui had also confirmed that the strange fire could sense her master, who existed as a consciousness.