Martial Dao Upgrade System

He was once a slave of the Bloody Tower, an executioner at the street corners, and also a great demon that everyone feared. He was once humble to the dust, but in the end he stood proudly in the clouds, overlooking the myriad mountains, he is Wang Feng!Wang Feng transmigrated, obtained the Martial Dao Upgrade System, killing one person is a crime, slaughtering ten thousand people is a hero, annihilating millions of people..."No matter if it's a demon or a ghost, a god or a devil, this world is ultimately decided by me!"