What does it mean for the stars to hang three thousand miles in Ye Ping?

Ye Ping is 3,000 miles away from the stars, which means that the stars are hanging on the horizon, while Ye Ping is very wide. The moonlight is surging with the waves, and the river is rolling eastward. According to relevant public information, the whole poem "Ye Ping is 3,000 Li, Ye Ping is 3,000 Li, when will the bright moon come to the river?" is from Du Fu's One-Night Romantic.