Read a book a hundred times and you will understand its meaning. The old horse lurks, aiming at a thousand miles. The martyrs were full of courage in their later years. (Cao Cao)

Turn on the light at night, and it's time for men to get angry at five o'clock. Teenagers only know how to play, but don't know how to study hard. When they are old, they regret why they didn't know how to study hard when they were young. (Yan Zhenqing) A spring night is worth a thousand dollars. (Su Shi)