In the summer of that year, Yan Yu met a young man walking towards the light. Yan Yu describes a gloomy young man whose parents died in an accident and was separated from his sister when he was young. Cai Xuze, a young man from an aristocratic family, whose parents loved him and whose family was harmonious, became destined to meet under the elm tree, and then gradually developed feelings for each other as they got along. What he (Cai Xuze) said, "When the spring comes, let's go see the flowers." He (Yan Yu) will remember them all his life.
Concept: Two male protagonists