C399 Refining a Golden Core

Young Master Xue drew his sword and took a few steps forward to protect Su Yan. He mumbled something and drew a circle in front of him with the sword in his hand.

Suddenly, a huge umbrella-shaped air shield quickly formed in front of them. There was a faint glimmer of light.

"Hiss! Hiss!"

The black gas that came out of the Black Blood Venomous Dragon was blocked by this air shield