Travel to the Tang Dynasty and Work Odd Jobs for Monsters

I was reading a history book and then fell asleep and suddenly traveled through time? Wow, Li Shimin in the prosperous Kaiyuan era! No, I was suddenly arrested as soon as I traveled through time! No, even if you arrest me, you still want me to do odd jobs? No, why do you look like Shanhaijing and Gomora! My future boss is a monster. Help, help! Okay, I'll take this odd job, just pay it! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.