I, the Beast Master, Have Signed for Ten Years and Become a Boss

This is a world of extremely powerful force. The ferocious beasts here can even destroy cities. They are comparable to gods and demons, roaming across hundreds of millions of miles of wilderness. Strong humans can contract ferocious beasts to become their pets, while weak humans can only hide in human cities, marry and have children to raise the next generation. Li Yuan became a beast master and awakened the sign-in system. In the first year after signing, he destroyed a beast wave. In the third year of signing, he broke through Federal University. In the fifth year of signing, he traveled a hundred thousand miles across the wilderness. On the tenth year of signing, he was invincible. Li Yuan's voice resounded throughout the world: "With my protection, the Federation's mountains and rivers will be safe for thousands of years. If ferocious beasts or foreign enemies dare to offend, their blood will be splashed across the mountains and rivers!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.