According to the last three lines, it should be Biedongda, but according to the first clue, it is not Biedongda. Biedongda is a farewell poem, not a frontier fortress poem. So there should be no four clues matching!
Don't move, senior.
Like a bird, she still flapped her wings and felt sorry for herself, leaving Beijing for more than ten years.
A gentleman is poor, who wants to meet today without paying for drinks?