The Book of divination: I Live at the Head of the Yangtze River "is a work by Li Zhiyi in the Song Dynasty, which describes the author's longing for someone far away due to geographical distance. In the poem, 'I live at the head of the Yangtze River, and you live at the tail. I miss you every day and drink the Yangtze River water together.' It shows that although the two are separated by two places, their shared Yangtze River water tightly connects their longing. And 'I only hope that your heart is like mine, and I will not disappoint my longing' expresses the author's deep emotions towards someone far away, hoping that their feelings will be the same as mine and not disappoint this deep longing.