Meaning:
The forever woman in my heart leans against the door, expecting her husband's return. Hospitality is the meaning of travelers, and it is to rely on them. The pillar is the railing of a tall building. People leaning on the railing are generally worried, some are meditating, and some are expecting the return of people from afar.
Therefore, in poetry, it is often used to express sadness, missing, meditating alone and so on. Common images in classical Chinese.
Miss one's old country, hometown and relatives.
Said by: You should not be talking about ancient poems, but couplets.