C307

When Gu Yuan saw this scene, his face was filled with shock.

The Ancient Clan had been in charge of the Celestial Tomb for thousands of years, so Gu Yuan naturally knew what that door in the sky represented!

that was the door to enter the Celestial Tomb!

However, no matter what methods Gu Yuan had used in the past, to the point where he didn't hesitate to join other Imperial Clan experts