Mainly because of the burning of the bomb. In the play, the bomb will burn all the time, penetrating the skin, eroding the muscles and reaching the bones. Moreover, the burning substance is highly toxic. In this difficult internal and external environment, Lei Gong's body appeared serious scars, and nosebleeds were one of the manifestations.

Tripterygium wilfordii settings:

Lei Gong drove a jeep with a marker bomb away from the big army, which attracted the fire of all the soldiers and died unfortunately.

I believe everyone still remembers that before he died, Lei Gong said, "Oh, it hurts me." You may wonder why an injured veteran said such a thing before he died. In fact, Lei Gong is really suffering. Because according to Lei Gong's final injury and performance, Lei Gong was seriously injured.