Here are Yijian and Sanjun, Yang Shengli and Bian Lan, heartbreak and Wuxin, a tall, thin boy and a sneezing girl... These are just the random thoughts of Yijian and Sanjun. It's just the compassionate spring and autumn of Sanjun, and it's just Yijian's empathy.
[PS: Actually this article is a collection. Yijian Sanjun is one of them, with a BL sexual orientation, and there are other modern green ones, with a BG-oriented sexual orientation.