C993 This Is the Residence of Gu Yulin

Gu Yuan had been staying in the cultivation room in Sigu Garden for the past two days.

He had been thinking about how to concoct the Wolf King Heart's medicine.

After thinking about it, he could only concoct the Wolf King Pill.

After all, only the Wolf King Pill could match this medicine. Otherwise, wouldn't it be a waste of heaven's gifts?

But if he wanted to refine the Wolf King Pill