When I was a child, I recognized the "magic pill"-like Nan Ge as my elder brother. He is as wild as a gust of wind, but he is extremely protective of his shortcomings. His whole body is filled with tenacity that refuses to admit defeat. As long as he is around, no one dares to bully me easily. When we were at that time, I was confident that this brotherhood of walking side by side would accompany us all the way as we grew up, becoming a bond that would be engraved in the years and remain unbreakable throughout our lives. Later, my family moved and we were separated by mountains and rivers, so I completely cut off all contact with him. I thought that we would just pass each other by in this life and never meet again. But many years later, when I walked into the university campus, I accidentally bumped into Brother Nan in the crowd.