Her family and friends could not tolerate the originally lively and sunny heroine becoming uncharacteristically uncharacteristic overnight. Under the guidance of a psychiatrist, the heroine revealed the reason. Does love in parallel time and space really exist? Is it Zhuang Zhou dreaming of a butterfly or a butterfly in love with Zhuang Zhou? The lovers who have spanned 30 years are as real as the marks on their bodies, but they are still untouchable. A promise made in parallel time and space, I will hold you tightly when we meet again, hold you tightly...