sāngēngdēnghuǒwǔgēngjī,zhèngshìnánérdúshūshí。
Every day when the cock crows, it is the best time for boys to read.
This is the first time I have seen you.
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.
2. Translation
Midnight is the best time for boys to study every day. When they are young, they should know how to study hard and study hard. But if you only play and don't study hard, you will regret why you didn't study hard when you were young.