According to this, there are three versions of the story of the feud.
The first version says that the current emperor is working hard to eradicate the priest clan and restore the glory of the Gu royal family.
The second version says that the current emperor was deeply in love with the priest Si Ye, who was also a man. However, in order to maintain the reputation of the royal family, he had to kill the priest and bury this forbidden love with tears. So on the one hand, he torments the priest crazily out of reason, and on the other hand, he treats the priest crazily out of passionate love.
The third version, which is also the most widely circulated and popular among the people, seems to say that the emperor and the priest fell out over a woman. And that woman is Concubine Xiao who is the most favored harem nowadays.
Conception: