What do Qu Zixing's poems "Where to Sing" and "Now I have crossed the horse" mean?

Guo Moruo's feelings after crossing the Miluo River

Qu Zixing sang, and now I have passed the horse. Yao Jiangzhu is full of vitality in the morning.

Take care of the world and ask Miluo with a whip. There are three households in Chu, where is Huai Shili?

Today, I rode by the place where Qu sang. The morning sun shines on the river, and my heart is full of vitality. Holding the reins and throwing the whip into the Miluo River with worries about what's going on in the world is like asking Qu Yuan why he threw himself into the river, even though the three Chu families can still destroy Qin.