C90 Chu Qing Hid the Rusted Sword

Although Chu Qing was troubled by the outcome, the reckless sword technique he had executed provided him with a crucial insight. The existence of Daoist Charm in this world was confirmed; without it, his sword move would have been impossible.

The transformation of the Rusted Sword was due to the Daoist Charm here being subtly different from that in the Cultivation World