MTL - My Brother-in-law is the Prince - Chapter 31 The capital is rampant

Ever since he was little, Xi Jia’s yin energy was strong, and every day he saw ghosts and ran into ghosts. One day, he accidentally broke the protection amulet. Celestial Master Ye Jingzhi happened to pass by and helped. Are ghost catching Celestial Masters all legit masters? WeChat official accounts, Taobao online shops, looking at gossip tabloids every day. Since then, Xi Jia has refreshed the lower limit again and again, and met a group of completely unreliable Celestial Masters. Binding spirits, doppelgängers, the Mausoleum of the First Qin Emperor, the ghost market of Poyang… The door to a new world is slowly opening.

Set in an urban city with supernatural elements, this is a love story between Xi Jia, who has a body of extreme yin, and Celestial Master Ye Jingzhi, nicknamed the King of Hell. The seemingly weak Xi Jia, in actuality, can rip apart ghosts with bare hands; the seemingly cold Ye Jingzhi, in actuality, is shy and gentle. A marriage contract binds the fate of two people together. See how the two people overturn the heavens in the gossipy and wacky metaphysical world.

- Description from Novelupdates

An Individual from Earth finds themselves in the Shinobi World, equipped with a Scientific System. From that moment, he delved into scientific research far ahead of its time.

Intellectual Villages are old fashioned rural villages recreated with cutting edge technology. Those villages attract the Japanese monsters known as Youkai.

The high school boy Jinnai Shinobu lives in one of those villages and has a Zashiki Warashi living in his house. He tends to run across Youkai with unnerving frequency and this often leads to trouble for him.

Lu Qingshan, a renowned player ranked in the top ten of the Sword Cultivators’ leaderboard in “Nine Heavens,” had been reincarnated into the very game world for which he had always strived. Sword Cultivator, a class in “Nine Heavens,” known for dealing the highest damage but also having the least amount of health, leading to their nickname “Brute.” In this life, Lu Qingshan had still chosen the path of the Sword Cultivator. However, this Sword Cultivator seemed a bit too stable???