The sentence expressing homesickness in Du Fu's remembering my brothers on a moonlight night is "he knows that the dews tonight will be frost, how much brighter the moonlight is at home!." .

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remembering my brothers on a moonlight night Don Du Fu?

In a wanderer hears drums portending battle, geese are singing in autumn. (A work on the edge of autumn: the edge of autumn)

he knows that the dews tonight will be frost, how much brighter the moonlight is at home!.

o my brothers, lost and scattered, what is life to me without you?.

yet if missives in time of peace go wrong, what can I hope for during war?.

2. Translation

The drums on the garrison block people from coming and going. In autumn, a lonely goose is singing.

From tonight, we have entered the Millennium solar term, and the moon is still the brightest in our hometown.

all my brothers are scattered, so I can't ask about life and death without a home.

letters from home to Luoyang are often not delivered, not to mention the frequent wars.