C59 The test of the cave

The speed was neither too fast nor too slow. The five of them sat on top of the mountain and looked at Fang He who was waving at them from the top of the mountain. Their white robes flapped in the wind, and the faint smile on their faces gradually disappeared.

"Elder sister, what kind of place is that Abyssal Mountain?" Wu Kong suddenly asked absentmindedly.

"I don't know either