The following content cannot be very powerful, it should be a nostalgic poem. Since the previous sentence has said that the golden horse is now where is it? Where are the soldiers who fought on the battlefield back then? Where are the generals who dominate the battlefield? It is just a grain of sand in the long river of history. Nowadays, those who revisit the ancient battlefield are just tourists coming and going.
The latter sentence followed by "The deep pass of Xiongguan is full of tourists" is very reliable, not only reasonable but also reasonable.