This kind of formation could not be opened by brute force. Even if it could be broken by force, the cultivation level required was higher than directly opening the formation. It would require at least the cultivation of the advanced stage of the nascent soul or even the immortal soul Stage.
This was also the first time Xia ruofei had encountered such a strange formation. The principle was not complicated, but the method to break the formation was there. If one's cultivation was not high enough, they could only watch helplessly.
"Daoist Cang Xu, have you found a way to break it?" Xuan Chen Zi saw that Xia ruofei did not speak for a long time and could not help but ask curiously.