This white-robed figure was no other, but Lu Xuan!
He had to pass through the Heaven Realm's main city to return to the Heaven Realm. There was a teleportation array inside. Otherwise, it would take Lu Xuan a long time to fly by himself.
Unless he could reach the Lord Realm, where the world was so close to him that he could travel freely between the Heaven Realm and the various worlds' battlefields. Only then would he be truly free and unfettered.
No matter how many times he looked at the main city of the Heaven Realm, he would feel shocked. This was a place that was several times bigger than Earth, and this area was transformed into a city. This was no longer the work done by the Imperial Emperor. On the contrary, this was an ability that only the Celestial Lord had.
Even the Imperial Emperor was unable to build such a terrifying city.