There are many ancient names of Poyang Lake: Peng Lize, Peng Ze, Guanting Lake, Yanglan Lake, Danshi Lake and so on. This is not because it has many origins, but because it has annexed many small lakes, gradually expanded, and also retained the names of those small lakes. Its original nickname originated from the period of Dayu's water control. Because of its low-lying terrain, several braided water systems were formed in this area. Therefore, the function word "Jiujiang" in ancient Chinese, which has a large number of forms, was called Jiujiang. "Kongyin in Jiujiang, Peng Li in the east" is recorded in Yugong. Peng, big; Li, ladle, gourd. That is to say, this depression lake has been like a gourd ladle since ancient times.
The origin of the name of Poyang Lake has always been different. There are mainly two mainstream theories: one is the name of place; the other is the name of mountain. The name of Poyang Mountain is the mainstream and accepted by most people. "Jisheng of Public Place" Volume 23, Raozhou, said, "There is Poyang Mountain in the lake, so it is named Poyang Lake. Its Lake stretches for hundreds of miles, also known as Pengli Lake. "Reading Historical Records of Fangyu" is also known as "Poyang Lake when Emperor Yangdi was connected by Poyang Mountain, which is also known as Poyang". The proof of place name is: Poyang County was called Fanyi in ancient times, also known as Fanyang, which belonged to Wu, Yue and Chu before Qin Dynasty. During the Sui, Tang, Song and Yuan Dynasties, Raozhou County was changed to Poyang County in the three years of Daye in the Sui Dynasty, which was an important historical period in which Peng Lize was renamed "Poyang Lake". This is the origin of the name of Poyang Lake.
