What does the ex-boyfriend mean in The Lanting Preface?

Ex-boyfriend said Xu Lanting was sharing songs. This person likes sharing and music. According to relevant public information, the intrinsic meaning of Jay Chou's Preface to the Lanting Pavilion is that when a man copied Wang Xizhi's Preface to the Lanting Pavilion, he thought of his beloved woman, thus remembering their good times together. So the lyrics have jumping time, dusk, moonlit night and rainy night. The place has changed, including the first acquaintance in Qingshiban Street, a glass of wine in the afterglow of the sunset, and the thoughtfulness when posting on a moonlit night. Emotions are complicated and sad.