Why can an ancient emperor marry his own son when he is dead?

That also depends on the times. China's current feudal thought was gradually formed after the Song Dynasty. The Qing dynasty reached its peak. If the father died and the son succeeded, he would be more tolerant in Hu Feng's time. Like the Tang Dynasty. As for the conference semifinals. The tradition of ethnic minorities is to inherit marriage. After the death of his father, a son can marry all his mothers except his biological mother.