C870 The Nine Nether Yin Yang Celestial Crystal

In a certain passageway in the underground hall of the Nine Profound Sect.

After a long journey, Ling Yunfan, who was being held by little girl Mo Yuerong's right hand, finally arrived at the end of the passageway. However, he was stopped by the secret room in front of him.

"Hmm?" Just as he stopped and was about to walk forward to push open the stone door