I recommend the Modern City Cultivation Diary to you. The main character, the Immortal Emperor, is reborn but can't return to the Immortal World. He can only live in the modern city and cultivate at the same time. The journey from the immortal world to the city was both refreshing and worrying for him, but he still insisted on cultivating and became a force in the modern world of Cultivators. I hope you like this fairy's recommendation. Muah ~😗