Across Different Worlds: My Sun Tzu System

There is a kind of time travel, which is called going back. Yuan Jing, a living unlucky ghost who accidentally traveled to another world. As soon as he traveled through time, he became a beggar. He was knocked down by a carriage and his body was abandoned. He was resurrected and awakened his system in a mass grave. It's just that his system seems to be the same as all the time travel stories he has read, but it seems different. Moreover, this system also has a resounding name - Sun Tzu! With the assistance of the Sun Tzu system, in this different world, Yuan Jing started the clearance mode in order to return to his own world. What is customs clearance? Become the king and hegemony, fight immortals and demons, conquer the six realms, and dominate the ups and downs of another world? Or... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.