They met when they were seventeen years old. From acquaintance to falling in love, they dealt with many things, were obstructed, and even hesitated and doubted, but in the end they both believed in each other, so they achieved the happiness they wanted. "Pu'er, can I ask you a question? Why do you like the calamus flower?" "Because it is us." Li Changxin and Zhao Pu'er - calamus. There is a calamus growing on the edge of the swamp. Two flowers are blooming and swaying in the wind. They rely on each other and are each other's happiness. The same is true for Li Changxin and Zhao Pu'er.