After My Sister Was Killed, I Launched an Army to Kill All over the World!

In the world of beast control, the law of the forest is that the weak eat the strong. Under the strict hierarchy are the oppressed people. Qi Yang, as a beast-controlling genius, had his opportunity taken away from him, turning him into a useless person who could only do nothing for the rest of his life. Unexpectedly, it was a blessing in disguise. He actually awakened the summoning system, creating a small skeleton every second. While others were still having trouble capturing the powerful beast, he had already formed his own undead army. After completing the awakening ceremony and returning home, he saw his beloved sister lying in a pool of blood, while the murderer was enjoying the glory and wealth. Seeing his sister lying in a pool of blood with eyes wide open, Qi Yang was filled with anger. He knew that it was time for the world to be reshuffled...