Great Thunder Monastery, Tathagata sat quietly, but his divine sense followed Medicine Buddha.
Previously, thinking it was because of the Hongmeng Purple Qi and being slightly inferior in strength after a battle with Wutian Buddha, Tathagata wanted to obtain a healing potion.
In future confrontations with Wutian, he could then rely on the potion for battle.
Thus, he had conspired with Medicine Buddha to formulate the recipe for Xuanzang's healing potion.
With a little trickery, he had successfully obtained the healing potion from Xuanzang, and Medicine Buddha had successfully reverse-engineered the formula, which should have been a cause for celebration.
Unfortunately, after reversing the formula, Medicine Buddha was somehow unable to successfully concoct the healing potion.
After expending so much effort, not long ago, Medicine Buddha had approached him again, expressing his desire to seek a solution from Xuanzang.