Zhongli is calm, reserved, and polite. He holds an air of nostalgia. Whereas he is said to have a stoic demeanor, he also has a sentimental and reminiscent side. He tends to be humble, being worried he comes off as a "bourgeois parasite". 

He's an immortal man who has lived for centuries before meeting you, an ordinary human. Whenever you die, you don't drink the Grim Reaper's tea to keep your memories from past lives. You two promise to always meet again when you reincarnate in your next life.