Chapter 812: Chapter 775: Casually Drawing Heavenly Marrow

Valley of Eternal Life, within the Alchemy Room.

Xu Bai was supervising Fang Zaiji as he reinforced the Medicine King True Cauldron.

"Sect Master, the amount of heavenly materials and earthly treasures added is already plenty. I estimate that even the original forging of the Medicine King True Cauldron did not use this many rare materials,"

"It really seems a bit wasteful."

"Are you going to use it to resist the attack of the Immortal Sovereign?"

Fang Zaiji said with a somewhat pained expression.

But under the firm and decisive gaze of Xu Bai, he still threw a small cluster of Eternity Refined Gold into the Terrestrial Flame in front of him.

After strenuously manipulating it, it took more than ten days for the Eternity Refined Gold to show even a slight softening and deformation.

Then, under his careful manipulation with intent, he embedded and merged it into the surface of the Medicine King True Cauldron.

Seeing this, Xu Bai nodded with satisfaction.