Where can I buy the immortal gourd of Water Margin?

Drugstores that make players' pharmaceutical skills don't sell gourds. If LZ wants to learn, he can go to Yingtianfu to find Frankenstein to learn medicine picking and pharmaceutical skills. He can find Brother Jellyfish, whose formula is only Grade 2 and Grade 3. If he wants to learn higher formulas, he can learn from those people. There is a research room in the gang, but he needs help to learn the formula.