Empyrean City was one of the main cities of human cultivators on the Hallowed Beast Continent. With more than one Perfected Lord guarding over it, Empyrean City was rather safe.
Lin Feng landed outside Empyrean City with the five Chaotic Perfected Persons, but the city gate did not open. As for flying directly into Empyrean City, that was impossible, because there was a defensive array.
This defensive array was more than just a Perfected Lord's array. It was even personally presided over by a Perfected Lord. Even Chaotic spirit beasts could forget about breaking the array.
"I'm Lu Ba. Open the gates quickly." One of the Chaotic Perfected Persons stepped forward and shouted.
"Eh, Lu Ba, you're back so soon? As usual, one Chaotic prime crystal per entry."