I Signed a Contract with the Leader at the Beginning?

This world is about to be destroyed, and its lifespan is only one hundred years. The leaders of the four poles realize the truth of the world and act independently, but still feel that there is little hope. Qin Wangtian, the warrior-breaker, emerged from the Nine Heavens of the East Pole, possessing the blood of the World Tree. He established a connection with the Son of Fate of the Four Pole and embarked on a path to save the world and clean up the universe.