The Dragon Son-in-Law in the Hemp Robe

[Urban fantasy, Celestial Master, broken engagement, face-slapping, satisfying read, revenge] Similar in content to the manhua-style drama Feng Shui Celestial Master. The day I was born, disaster struck from the heavens, and I nearly died. To save me, my grandfather, who had long since retired, resolutely cast the Fatal Fate Hexagram to arrange my engagement and extend my life. Twenty years later, thanks to the fortune bestowed by my grandfather's Fatal Fate Hexagram, my fiancee's family became the richest in the country. But as soon as my grandfather died, they broke off my engagement. However, my grandfather had already made arrangements for this. My fiancee's family would soon face retribution, and the truth of my origins would gradually come to light...