Some things about Ziyunge: In the early 1980s, experts of provincial cultural relics and archaeology investigated the fan-shaped platform at the southwest end of Jinping, and unearthed some pottery fragments of Han Dynasty. The excavation of these cultural relics shows that people have been engaged in farming activities or building villages in Longjiang in the Han Dynasty. It is precisely because of the historical background of the construction of villages in the Han Dynasty that it is possible to have a market in Longjiang in the Tang Dynasty hundreds of years later. During the Han and Jin Dynasties, the sea routes in the Pearl River Delta were quite developed, with frequent ships from Guangzhou to Cangwu and Jiao Jiao. Because Longjiang is located at the crossroads of the sea route between Guangzhou and Cangwu, big ships often dock on the beach under Fengshan, but the beach of that year had accumulated into land by the Song Dynasty. In the Qing Dynasty, when someone was building a house and digging the foundation here, the remains of a ship buried for thousands of years were dug up, so this place was named "Fairy Cave". Jin Dynasty was a historical period in which the Eight Kings Rebellion occurred within Sima's ruling group. This triggered a large-scale migration climax in the Central Plains, and the Pearl River Delta also ushered in a batch of migrants from the Central Plains. In short, whether by sea or by land, Longjiang in the Han and Jin Dynasties has indeed ushered in the civilization of the Central Plains.