Chu Qingyun and the vast majority of people in Kingdom Qian knew that the Demon and Human races had been in constant conflict since ancient times, making peaceful coexistence extremely difficult.
In the nearly three thousand years of history, there have been hundreds of wars, large and small, between the kingdoms of the Demon and Human races.
The number of casualties in these wars has become impossible to calculate.
Even a simple estimate would suggest that the death toll on both sides is at least over a billion.