Everyone's Job Change: I Am a Death Knight, Oppressing All Living Beings

[National job change + many professions + passion + upgrade flow] Gu Zheng travels through the game world invaded by the demon army. In this world, humans have learned magic, and everyone has changed their profession to fight against the demon army who intends to destroy the world. Terrifying secret realms and abyss dungeons contain countless artifacts and treasures. The Abyss Demon King and the Fear Demon are also waiting for their prey! Only those who have changed jobs can fight with him! Daxia is about to perish, and mankind is about to perish, so how can we save the world! On the day of the job change, purple clouds covered the sun, and Gu Zheng, the chosen one, became the only hidden profession among the hero professions: Death Knight! Summon the Skeleton Mage! Summon the army of the dead! I am an army by myself! Explode those festering wounds! The more demons there are, the higher my damage index will be! If this knife goes down, you still owe me nine lives! "I, the Death Knight, oppress all living beings!"