Everyone's Job Change: King of Hell

[National job transfer + system + city + exotic beasts + blood] Li Mingqian, who traveled to another parallel universe, worked as a waste for three years, and finally bound to the system on the day of his job change, becoming a mythical profession: Hell Messenger Everyone thought he was just a useless summoning mage, but they didn't know that Li Minqian was actually the medium between hell and reality! Summoning demons and killing decisively, Li Minqian grew step by step from the messenger of hell to the king of hell that made the whole world tremble. Li Mingqian, who was questioned by all mankind because of his terrifying power, declared domineeringly after an unprecedented battle with alien beasts: "I am hell!" With the human race in decline and the ferocious alien beasts, how can Li Mingqian grow into the hope of all mankind? Traveling through the world and binding the system, what secret is hidden behind all this?