Champak

Guns suppress all divine demons and evil spirits, flesh and blood forge the multi-dimensional Great Wall!
In the second year of Ming Country, Tianmen City was in need of recovery after the war. Chaos thrived, and evil spirits roamed freely.
The children of the poor take charge early, and garrison soldiers need to learn to earn their own money.
My name is Wang Yunxiao, an external field agent for the Special Service Bureau, specialized in dealing with various demon and evil spirit emergencies locally.
Let me introduce my wife Li Mumu—she is gentle, virtuous, cute, and empathetic, and she is an evil spirit.
Who writes a diary in all seriousness! Can what’s written even be considered true inner thoughts? Despicable!
(The female protagonist’s solo storyline begins later, starting from chapter 87)

Chapter 116: The Sutra of Guiding the Deceased to the Afterlife and String Theory