After all, when the World Tree matures, there are still people on the other side in that underground world's prison. Xu Xin and others were attacked by a group of stone wyverns when they went down there.
Moreover, even though the underground world has the World Tree's roots for defense, it is not enclosed and can be observed freely, so explorers generally believe that the other side should have already known about the fast time flow within the World Tree.
Yet, this thousand-year-old survivor before them actually didn't know about this...
Could it be that the fast time flow within the World Tree hasn't been exposed yet?
"...No, after we returned last night, we went to sleep. We came as soon as we woke up this morning. After all, within the World Tree, it's not easy for the three of us to discuss our previous matters." Lou Fei'Er said honestly.
"I see..." A trace of ruthlessness flashed in the man's eyes, "Can you take me inside that World Tree?"
...?
