What are the poems about Yan State?

"Yan Dan used to avoid Qin soldiers, but Yan Shui now carries the name of the prince.

The mouth of the canal is far from Qianjian, and the head is close to a flat river.

Si Gan entered the Weixiong Song, and he was with the White Horse Alliance.

Walking for profit before crossing to the evening, singing songs across the misty rain in the forest.