You Don't Understand the Joy of Time Travel

Zhang Yu is a 45-year-old man who has been devastated by work, life, and family to the point where he has lost his energy. In an experience of being locked out of the door, I traveled through time. Blue Star, cultural works are shining brightly, but the category of fantasy is missing. Let's see how the protagonist, an old bookworm, lives a tough life in Blue Star.