C1500 Dragon's Head in the Celestial Tomb

"What a terrifying flow of time!"

This was Murong Yu's first sigh after stepping into the Immortal Tomb. The reason why he used speed instead of terror was because the flow of time here had already surpassed the "fast" realm and had reached a terrifying level.

In an instant, it had reached the speed of a billion years!

In other words, within the Immortal Tomb