He never dared to forget the heartbeat and vows he made when he was young, because he was really afraid that if he didn't remember, who would know their story. Wen Yan thought he would never see him again, but God still sent Xia Yiche to him. Maybe God felt that Wen Yan was losing his whole life and couldn't bear to let him be alone again, so he sent back the boy who could be remembered by Wen Yan for a lifetime.
Purpose: commemoration