The words of the Green Ox Demon, though seemingly casual, caught Jiang Liu's attention.
Out of the blue, he started asking about Healing Potions for injuries, and specifically, not about Elixirs but Potions, which revealed a lot.
Thinking back on the battle at Leize's residence, Sun Wukong managed to defeat Master Leizhen in a duel by relying on the effects of consuming potions. Jiang Liu had an epiphany, "So that's what he's after..."
On the surface, it seemed as though the Green Ox Demon sought him out to discuss Alchemy, but considering he was the Supreme Elder Lord's mount, how could Jiang Liu not be cautious?
Sure enough, his vigilance was justified; otherwise, he might have carelessly leaked the recipe for the Healing Potion.
While Jiang Liu deemed Healing Potions not particularly valuable, being able to produce them even as a Primary Level Alchemist, he was well aware of their miraculous effects in this world.