Time flies like an arrow yet the days of memory linger on. September16th, 2017, in the autumn day of gentle breeze and a clear sky, Beijing Jiaotong University(BJTU) has marked its 121th anniversary. From School of Economics and Management(SEM), BJTU, nearly 600 graduates of 1987, 1997, 2007, etc., returned to their alma mater, reliving the memory in revisiting SEM. In cordial hugs and genial chats, our friends collected remembrance of good times, collectively expecting an ever bright future.