C4593 I Don't Think so the Unfalling Dynasty

Generally speaking, refining a warship or palace type Celestial Artifact requires Celestial grade materials at least several times that of an ordinary Celestial Artifact.

Or even ten times!

In other words, the materials needed to refine a warship or palace type Heavenly Venerate weapon could be refined into several Heavenly Venerate weapons, or even ten Heavenly Venerate weapons.

Therefore