The 35-year-old female writer Yang Yipeng accidentally traveled back thirty years and became a five-year-old girl Mu Mu.
She tried to find an opportunity to change everything, but accidentally discovered the secret hidden in a long time.
Everything seemed foggy but gave her an inexplicable sense of familiarity, the letter to the mysterious man Y, the taciturn little girl Mu Mu, the familiar yet unfamiliar scenes... Destiny seemed to be invisibly pushing the outcome of everything.
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The 35-year-old Yang Yipeng hates life and rejects himself. The 7-year-old, 17-year-old, and 27-year-old Yang Yipeng are like a clumsy and warm light, trying to illuminate this somewhat crowded and dark world.
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"That boy, I don't remember who he is, I don't remember his name, or what he looks like. I just remember that he had a pair of very clean eyes, which were filled with the blue sea, the cleanest wind, and me who was so small, so small that it made me feel extremely sad for no reason."
Mission: Even in darkness, we still believe in the existence of hope