What was Gu Xiancheng's national salvation couplet when he was studying?

Gu Xiancheng's national salvation couplets are "the sound of reading and listening, the family affairs, the state affairs and the world affairs, and everything is concerned". This pair of couplets with lofty aspirations has been widely read, and now it is hung in Yiyongtang.

The first couplet combines the sound of reading with the sound of wind and rain, which is both poetic and meaningful. The bottom line is the ambition to rule the country and level the world. Wind to rain, home to country, ears to heart. Extremely neat, especially when used with words, such as the sound of books.