The Best God and Devil Concubine

It is said that Yin Lili, the eldest princess of the Kingdom of Li, is a cheap maid who can be commanded and insulted by everyone, but there is no way she can fight back! However, when the old immortal from the Feng family entered the palace, he saw this little girl drinking human blood and playing with dissection. So in ecstasy, he made a good marriage for the little beast in his family who "deceived his teachers, killed his ancestors, and deviated from the orthodox"...