I Am the Immortal of the Demon Slayer Division

Eight hundred years ago, Taizu Taizu of the Great Zhou Dynasty was born, and he established the Demon Slayer Division to wipe out the demons in the world. Eight hundred years later, a soul from another world came to the Zhou Dynasty. The government is in turmoil, the demons that have been suppressed by the government for eight hundred years are ready to move, and the world is in chaos. Zhou Pingan originally wanted to live forever in the Demon Slaying Division, but the demon refused to let him live in peace. Zhou Ping'an: Since you won't let me live in peace, then I have no choice but to wipe out the demons!