C921 Person behind the door

It was also because of this that a master refiner like Gongshu Ku could barely manage to refine twenty Spirit Gathering Crossbow's core every day.

Hmph, a few days ago this brat threatened to refine a thousand Spirit Gathering Crossbow cores within seven days. I would like to see how much he can refine.

The moment Xiao Feng joined the Azure Wolf Army, he became a first-rate Artifact Refiner