The poem that reflects the poet's old and frail self, but still wants to defend the border and serve the motherland is the following two sentences.
I don't feel sorry for myself in a remote village.
Think about the country.
I lay flat in the lonely and desolate country and didn't feel sad.
Still thinking about defending the country.
① jiāng prone position: upright prone position. ② Guard the wheel platform: guard the edge (jiāng). Luntai, a place name of the Western Regions in Han Dynasty, is now located in luntai county, Xinjiang. Here generally refers to the frontier defense stronghold in the north.