The details can be found in the book of the first volume (curriculum reform area) of the eighth grade of junior high school. I remember the first few lessons, and I checked the whole poem again, as follows:
Ode to Gan Tang by Zuogong Westbound.
The general has not yet raised the border, and the children of Huxiang are full of Tianshan mountains; The newly planted willows are three thousand miles long, attracting the spring breeze to cross Yumen.