Dragon-Subduing Coffin: The Demon King's Son

My name is Zeng Yu. When my mother gave birth to me, she suffered a difficult labor. Everyone said I was the Demon King’s child, destined to bring disaster. But the Zeng family had only one heir in each generation, and my grandfather insisted on cutting open her corpse to retrieve me. He said, “The red coffin goes in, the white coffin comes out. It’s all cause and effect.” After my mother was laid to rest, my grandfather defied fate. Using yin and yang to point the way to the flood dragon, he arranged a childhood betrothal between me and a girl born in a yang year, month, and hour.