The happiest thing in Fei Xingchen's life was meeting Si Qingye, who brought a warm dawn to his gray world. The most painful thing in Fei Xingchen's life was meeting Si Qingye, because he made him push hard into the dark and cold river of sadness and struggle when he felt the warmth.
"Si Qingye, the luckiest thing in my life is that I got to know you, and the thing I regret most is falling in love with you when I was 17 years old." After saying this, Fei Xingchen jumped into the dark and cold river of sorrow with relief.