"Books are like green hills and lights are like red beans." Which poem is Lu You?

Correctly speaking, "Books are often stacked with green hills, and lights like red beans are the most lovesick" is not a poem written by Lu You, but a couplet written by Ji Xiaolan for his study in the Qing Dynasty, which is the most difficult to read and the easiest to hide and think about. Couplets refer to the untidy arrangement of books in the study, which is like high and low hills; The ancients lit oil lamps or candles, which were generally not big, because they saved lamp holders. Snuff is as big as red bean (locust bean). Ji Xiaolan directly compared this book to his confidante. At night, Eden is like a bean, spending the night with his beloved book.