Don't Call Me Heavenly Master

[Two male protagonists + supernatural + unit investigation + a slap in the face] My name is Gu Shen, I run an ancient book restoration shop, and on the surface I am an ordinary craftsman. In fact - well, I really just want to be an ordinary craftsman. But God did not fulfill people's wishes. Late that night, a good-looking but cold-looking man walked into the store and handed me an ancient book that could write his own blood book. There were three shadows trailing behind him, and he looked at me like he was looking at a puzzle. Immediately afterwards, a century-old female ghost wearing a bright red wedding dress stood at the door of the store, crying and begging me to help her redress her injustice. I originally wanted to pretend I didn't see it. But the female ghost had embroidered a lotus flower on her wedding dress, which was a pattern recorded in my great-grandfather's notes. Okay, Grandpa's old acquaintance can help me with this. As a result, after much research, I discovered that the man named Yin Chuan was something more than a simple man - he was the judge of the underworld and a powerful figure in the Seventh Palace.