We flew to the bottom of the passage and found ourselves in an artificially excavated underground cavern. Apart from a few meditation cushions and some fresh fruits, there was an underground river beside it. Some of the Earth Immortal Tree's roots were exposed above the river's surface.
Most of the roots had still plunged back into the river. I was extremely sensitive to time and space, and in an instant, I noticed the thick roots—so large that even three or four people could barely wrap their arms around them—move slightly. It seemed that the part sticking out of the river was merely coming up for a breath of air.
"It's alive? It can move?" I asked in astonishment.
"Yes, it's alive, but it moves slowly. The underground river is also very quiet. After all, this is the underground immortal river that circulates within Sky City," Fu Yu said.
"If it's an underground immortal river, and it circulates, doesn't that mean we can swim to other waters and steal fruits from other peaks?" I asked curiously.
"Everyone thinks the same way when they first see the Earth Immortal Tree, but this tree won't let you do as you please." Fourth Brother snorted, openly disdainful of my idea.
"That's right. Aside from the grand arrays on every peak that firmly separate the territories, the fruits on each peak only grow at the very ends of the roots. Besides, whoever enters this immortal river can be clearly seen by Sky City's River-Observing Great Immortal. If a disciple from any peak dares to recklessly pick the fruits, they'll be punished. Only the peak master can enter the water and pick the fruits with a special token. Ordinary disciples who go in will suffer severe punishment. At best, their Nascent Soul will be destroyed on