I'm looking for books like The Longest Day in Chang'an, the complete two-volume edition. No modern technology: solving cases in ancient times should be genuinely difficult. Stories where the protagonist gets a System for no reason are no fun.
The prince from another world is in a dead end at the beginning, and is regarded as a thorn in the side of the royal family and nobles. Every step is fatal. He relies on forward thinking to build confidence, clarify the relationship between various forces, skillfully resolve the siege of aristocratic families, grow against the wind in the power chess game, and it is difficult to be completely killed.
You can try this book, it's really good. Combining the fireworks of the Tang Dynasty with the weird and wonderful things, every dish at Wuweiguan has a story. The experience of the proprietress is indifferent, and the more you taste, the more delicious it becomes.