When the "Butterfly Lovers" from a thousand years ago met the sound of the piano a thousand years later, like the murmur of water, at that moment, I heard the sound of flowers blooming in my heart. This spring of love, when the first bird song falls, it sings the songs of the world: the ancient town in the south of the Yangtze River with the singing of birds and the fragrance of flowers, the sworn vows at Caoqiao that fell in love at first sight, the classmates of Hongluo Academy for three years, the reluctant farewell of eighteen , the beloved son and daughter bid farewell in Changting, the grief-stricken Yingtai resisted the marriage, and the sad and beautiful clothes turned into butterflies.