C360 Great development sword technique

"Strange, what is this thing?"

Chu Yun raised his head and looked at the golden light, and could not help but be lost in thought.

When his Supreme Battle Soul reached Yellow Rank Level 10, he obtained the heavenly blade; now that he was promoted to Black Rank Level 10, he obtained the water moon sword.

Logically speaking, this should be it.

But other than the water moon sword