C83 The Curtain of the Heavens Silver Coffin(4)

Qi Sanbiaozi also agreed with Fang Zishu's suggestion.

They were still young. Even if they met with danger in the depths of the cave, they could still think of ways to escape. But Professor Xu was different, not only were his actions slower than them, his physical fitness was also far inferior to them.

Once he encountered danger in the cave, the safety of his Professor Xu would become a problem