The Ninth Grade Divine Transformation Pill, such an item...

Even if you combined the resources of the Seven Sacred Grounds, there wouldn't be many of them.

Even a grandmaster-level alchemist would have to refine a thousand furnaces of Yang Essence Pills to have a chance of producing one or two Ninth Grade Divine Transformation Pills.

A thousand furnaces mean ten thousand pills, with a one in ten thousand chance, and that's for a grandmaster-level alchemist.