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Han Shibu had a dream. When he woke up from the dream, twenty years had passed in this world, and everything had changed. How should he face his wife? Friend? What path should be taken? A dream, a piece of cause and effect, spans thousands of time and space, implies endless avenues, and involves the order of the universe. The moment you open your eyes, everything unfolds...

I didn't read the novel, I watched the TV series. This is the sequel to the TV series. If you are interested, you can watch it. This book is also called "TV Series Qing Yu Nian Season 2".