Emerging from the Wanhua Building, the sun was high in the sky.
"Xuanhuang Cave Heaven, the Great World!" he murmured to himself.
He had just learned a lot of things from Xia Wanqin that he hadn't known before.
The Upper Three Days consist of Cloud Sky, Nine Heavens, and Five Elements Heaven.
This was the first time he had heard of it.
He suddenly thought of the girl named Zhou Yun he had seen before in Shangyang Cave Heaven.
At that time, the girl claimed to be from Cloud Sky.
Previously, he didn't quite understand what Cloud Sky was, but now he realized that the seemingly innocent girl was actually from one of the Upper Three Days, Cloud Sky.
Places like Qingyuan Cave Heaven, with the exceptionally powerful Qingyuan Taoist, were considered merely as Blessed Lands according to Xia Wanqin, not even qualified as Grotto Heaven.
The brief conversation just now made him understand more about a hidden corner of this world.
