I pull sheet of go to bed gently, had covered the face of old ox, bow silently to old Niu San: Bow, 2 bow, 3 bow.

• 老牛不是牛，老牛是我以前所在学校的一个老同事。他对工作的勤恳和不要命劲不是黄牛胜过黄牛。