The Yan people, saw themselves as superior so they did not know how to ease relations between the people of the grassland and spoke to the people of the grassland like they are an idiot
If you treat someone like an animal, don't be surprised when that someone also treats you like an animal
Racism is prevalent in this era because a group would feel safer with the same kind of people.
This discrimination is on all levels.
From those with powers, to those who share the same hometown, to the one in the village and to the one in the city
There is the others and then there are them
Of course, there is always enlightened thinkers in every era.
There was Mohist thinking during the Seven Kingdoms but their thoughts and ideas could not be accepted.
Why?
Because it is not a tool that the monarchs could use.
Different times have different ways, the wise uses the ways to control the world and observe the rise and fall of the Way