What does it mean to lock the empty lane in the deep courtyard for a long time?

Lock an empty alley in the deep courtyard, which means that the courtyard is deep and long, and the alley is wide and empty, and no one passes by. The cold courtyard lane is like a feeling of parting and missing that has been locked for thousands of years. According to relevant public information, the poem is from Li Yu's Lonely Wutong Deep Courtyard. The author added the word "empty lane" in the middle of the lock of "the clear autumn of the lonely phoenix tree deep courtyard" and removed the word "lonely phoenix tree" The meaning remains the same. Is to express a kind of parting. Specifically, the yard is deep and long, the alley is empty and wide, and no one passes by. This cold quadrangle lane seems to have been locked for thousands of years. Expressed the author's long speech.