I Am a High-Level Executive of the Evil Suppression Department. It Makes Sense for Hundreds of Ghosts to Travel at Night, Right?

[Advanced in the rank] + [Kind in appearance but ruthless in heart] + [One's own force and containing explosive soldiers in parallel] + [Decisive in killing] + [Brainy and refreshing article] + [No heroine] Mountains and seas hide treacherous things, and the world contains evil. Zhenxiesi is the Great Wall of China that belongs exclusively to Yanhuang. As the advisor of the time traveler, he was originally one of the humble low-level employees, but he accidentally obtained the exclusive golden finger [Illustrated Book of All Spirits' Orders] during a certain museum mission. As long as the evil thing is defeated and sealed and stored, it can be used by oneself forever, and it can also be used to feed oneself and become stronger quickly. The moment he asked the question "surrender or die", his painting style completely changed. Others abide by the rules, kill monsters and eliminate evil spirits, and regard spirits as savage beasts. Gu Yan's sword slave clears the way, shadows and demons lurk, all evil spirits bow their heads, and evil spirits follow. From the nickname "Ghost" in Baishan District to the recognized "King of Hell" in the three provinces of Yunlin, he solved unsolved cases, fought back to the ruins, and plotted to seize the fragments of the emperor's seal. He was proud of his success and prospered. Countless people asked sternly: "As a senior executive of the Evil Suppression Department, how dare you privately raise Yin soldiers and disregard the rules!?" Gu Yan's expression was upright and his tone was calm: "Nowadays, evil spirits are in trouble and monsters are rampant. In troubled times, we should use heavy codes." "I use a hundred ghosts to ward off all evil and protect the light of the world." "What's wrong?"