C440 Refining the Silver Bell Grass

Qin Yu did not know how long he would be locked up here. It might be a day, or two days, or even longer. Therefore, he could not afford to waste this time. Now that he had obtained the materials to refine the Rotation Condensation Pill, and he was locked up in this secret room, he could use this time to study the refining method of the Rotation Condensation Pill