C8027 The True Origin of Heroic Spirit Blood

And the Azuresoul Bone was the key to building the blood pools of the Poison Demon Clan!

It was precisely because human Martial Cultivators with the bloodline of heroic spirits shared the same origin as the Poison Demon Clan that the blood of human Martial Cultivators with the bloodline of heroic spirits had a special effect on the Poison Demon, allowing them to activate the Azure Soul