Du Qiuniang's Biography of the Witch in Tang Dynasty: Advise you not to cherish witches, and advise you to cherish youth. (Take a work: be sure to take it) Flowers can be folded straight, but they must be folded. Don't wait until there are no flowers. (Flowers bloom: there are flowers). I advise you not to care too much about the pursuit of fame and fortune, but to cherish the best time for teenagers to study. Fold the flowers when they can, and don't wait for the flowers to wither before folding an empty branch.
Besides: there is another moment that should last forever. Before I knew it, it had come and gone. -"Jinse" Li Shangyin (Tang) translation: Those beautiful things and years can only stay in memories. At that time, those people thought those things were just ordinary, but they didn't know how to cherish them.