C621 Unique Key

"It's the key! Hmm? Why does this key look different from the others?"

As a key drifted through the air, Xu Xiaoxiang's quick reflexes allowed her to snatch it out of the air. Yet, upon examining the key, she couldn't help but express her astonishment at its color. "Why is this key colored like this?"

Several Pill Academy disciples gathered around Xu Xiaoxiang, equally taken aback by the sight