2, the original text: the light is midnight at 5 o'clock, just when men are reading. 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.
Midnight is the best time for boys to study every day. Teenagers don't know how to get up early and study hard, and it will be too late to regret reading less when they are old.