C942 Improvement in Cultivation

Although Sui Guan hadn't used up too much of his energy today, and had used the fastest speed to finish off his opponent, he was still a little tired at this moment.

Sui Guan, who was lying on his double bed, kept tossing and turning, and couldn't fall asleep. Helpless, he could only sit up and meditate every day.

But this time, in thirty minutes