What is the next sentence of "black hair doesn't know how to learn early"

The next sentence of "black hair doesn't know how to learn early" is: I regret learning late.

original text

Persuasive learning

Don Yan Zhenqing

Every day when the cock crows, it is the best time for boys to read.

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.

translate

Midnight is the best time for boys to study every day. When I was a teenager, I only knew how to play and didn't know how to study hard. When I was old, I regretted why I didn't know how to study hard when I was young.

Listen to the famous saying of Xiao Shenyang.

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