Back when he was still the patriarch of the Wraith clan, Mi Xuan had basically stayed within the Undead World where his clan resided, rarely venturing out to the various realms of the heavens.
Even so, he was well aware of the top-ranking figures on the Heavenly Emperors' Powerlist of the heavens.
The Heavenly Emperor of the Realm of Impermanence, who ranked first on the Heavenly Emperors' Powerlist and was hailed as the foremost Heavenly Emperor.
Chapter 3558