Hu Yuxin was actually willing to have sex with others for Yu Yan. However, it was because of this that he entered Yu Yan's world. But Yu Yan already has his own life. Hu Yuxin finally understood the distance between them, no matter how far or near. He will be just a passerby beside Yu Yan. No matter how much he wanted to leave some traces, he still couldn't escape the fate of a passer-by.
All I do is leave a mark.