Fill in the verse and offer help.

How do young people know that things are difficult to do? The northern part of the Central Plains looks like a gas mountain.

It snowed all night in the building, and the autumn wind dispersed in the iron horse.

Stuck on the Great Wall and make an empty promise, the sideburns in the mirror have long faded.

When you debut, you can say your real name, but you can't fight for a thousand years.

This book "Book Rage" was written when Lu You was 62 years old, when he was living in his hometown of Yin Shan. This poem recalls the incident of recovering the three customs in that year, and reveals strong and touching lofty sentiments between the lines.