You're welcome. Poetry is timeless, and I'm sure the beauty he paints of that city can't match the truth. Your comment makes me think of a haiku from Bashō. He wrote. "Even in Kyoto / I long for Kyoto / A cuckoo" (京にても京なつかしやほとゝぎす / kyō nite mo kyō natsukashi ya hototogisu). I think Kyoto held a similar place for Japan, the one area in the country that was constantly peaceful. We could say Kyoto was the heart of Japan (and maybe still is). But our image never matches the reality, so even when we are there, we still long for our image of the place. As Bashō was highly influenced by Du Fu, he may have been thinking of him when he wrote that.