What is described in the poem?

1. Surabaya is a beautiful place to win a day. (Surabaya mentioned in the first sentence of the poem, Confucius gave lectures and preached in central Shandong during the Spring and Autumn Period, and was buried here after his death. )

2. Tianmen interrupted the opening of the Chu River, and the clear water flowed eastward behind it (Tianmen Mountain: located on both sides of the Yangtze River in Hexian County, Anhui Province, southwest of dangtu county, Xiliangshan in Jiangbei, and Liangshan in Jiangnan. The two mountains face each other across the river and look like portals, so they are called "Tianmen". )

3. Say goodbye to Baidi in the cloud and return to Jiangling (Baidi City, located in fengjie county, Chongqing, is the starting point of the Three Gorges of the Yangtze River. Jiangling is located in the south-central part of Hubei Province, which is near the north bank of the Yangtze River. Its terrain is very low, so the embankment is built for protection, and the shops are all in the embankment. )