System, Can I, a Slave, Be the King?

Ning Yuan traveled through time and was about to be sacrificed. Fortunately, he kept kowtowing to the altar and actually activated the system. Yes, as a poor wanderer from afar, he has a system called labor. [Exercise one, you need +1, (100/1)] The upper echelons of the tribe saw that Ning Yuan's muscles became bulging after kowtow, and they all thought it was a miracle, and then Ning Yuan gloriously... Became the mount of a noble lady. This lady's legs were used as steering wheels, riding on his head. The bronze flying sword in this world belonged to the world of immortality. The poisonous insects and ferocious beasts in this world grinded their teeth and sucked blood. It was the time when the road was in doubt. And how did Ning Yuan lead his legendary life of freedom? (The introduction is too weak, please move to the text)