"There's no problem with that, the Primordial Heavenly Demon Lord back in the day, aimed to assimilate Jiang Chen in order to make him a part of himself. With this cause and effect, Jiang Chen naturally didn't need to care about the consequences of impersonating the Primordial Heavenly Demon Lord."
"In fact, impersonating the Primordial Heavenly Demon Lord to do some shady deeds was extremely common in the Prehistoric World, and many Great Divine Transcendents did just that."
"Want to do evil deeds but afraid of tarnishing your own reputation? What to do? Simple, impersonate the Primordial Heavenly Demon Lord! After all, he is the lord of the Demonic Way, notorious for evil deeds, any bad actions can be conveniently blamed on him."
"It can be said that the great notoriety of the Primordial Heavenly Demon Lord today should be heartily thanked to the Great Divine Transcendents of the Prehistoric World, who really put in substantial effort in this matter."