Young Wei Xing met 30-year-old Li Shenghuan on a train to Glasgow. Wei Xing just went to England and saw Li Shenghuan, who was also Chinese, and insisted on following her. Li Shenghuan is an artist who makes wall paintings. Wei Xing happened to have studied art, so he helped her complete a wall painting called "Happy Song". In the process of getting along, Wei Xing discovered that Li Shenghuan hid an unspeakable secret in his heart. By chance, he learned that Li Shenghuan had always had someone he had always longed for - Xia Zhige. Wei Xing found Xia Zhige and told the reason why Li Shenghuan left that year. Xia Zhige came to see Li Shenghuan again, thinking that the ending would be happy. However, fate still has not spared these two lovers...
Intention: Because of love, I am sad; because of pain, I will never forget it