How Did I Become a Zombie in 1937?

Ling Chen transmigrated from 2025 to the year 1937 in the parallel world of the Han Kingdom. Somehow, he became a zombie: impervious to blades and bullets, immortal and indestructible. Yet he was unlike ordinary zombies. He could walk around, didn't need to drink blood, and could directly absorb yin energy and death energy. He also had a private space measuring one million cubic meters. In this era when the whole nation was resisting invasion, he fought the Japanese devils alone.