Ever since the founding monarch of the Li Kingdom, the principal wife could only be a commoner without any ancient divine lineage. Once an heir was born, the monarch was forbidden to take another wife to prevent the tragic chaos of princes fighting for the throne.
If a preceding monarch passed away due to illness or war, a successor would be selected from collateral branches, but it was mandatory that at least one of their parents was of commoner blood.
It was said that this was because the primary soul blood of the Lingshi Clan was too powerful; combining it with any ancient divine lineage would cause the offspring's blood to reject the union, leading to conflict and premature death. Over time, this became a strict taboo.
Chapter 32