C1631 cause and effect

Long Guhong and Li Shiyu looked at the wooden house. It was obvious that it looked like a pharmacy, but they had been studying in the academy for a long time. These two people felt that this place was more like a pill refining room.

Seeing the doubt in both Long Guhong and Li Shiyu's eyes, the old man did not hide anything and directly said: "I refined all the pill in the Nether Palace