At the beginning of the world, human beings stood at the top of all things with the perfect combination of their own spiritual power and weapons.
Under the rule of humans for hundreds of years, the orcs and elves who were used as slaves finally couldn't stand the joint uprising, so a war broke out that almost completely destroyed the entire Yalin continent. This war lasted for hundreds of years.
In the end, the war was won at a very painful cost for the orcs and elves. Humanity compromised, and the three major races were finally able to stand on equal footing. Although in the next few hundred years, in the eyes of most humans, orcs and goblins will still be alien and inferior creatures...