The "eight" of "eight expensive" means large and numerous, lush, not an exact number. Bagui refers to a large area of osmanthus trees, and osmanthus flowers are everywhere, so it is called Guilin.
The word Bagui was first used by Han Yu in the Tang Dynasty, and it was also the first time in official books to explain administrative divisions. It is a word used in the official version of Ming Dynasty's Unified Records of Daming, especially in Guangxi. Since then, "Bagui" has become the language of officials and scholars.
Extended data:
The origin of Bagui:
Guangxi is rich in osmanthus trees, which are connected into forests. There are two kinds of osmanthus trees. One is medicinal osmanthus fragrans, which is full of treasure, leaves can be used to extract oil, and pulp is a valuable medicinal material, which can be used as spice. Since ancient times, it has been a precious item that local governments have paid tribute to the court; One is ornamental osmanthus, which is white with yellow color and elegant fragrance.
There are two reasons why Guangxi is called Guangxi, which can be traced back to the pre-Qin period: one is that Guangxi is rich in osmanthus trees, and the other is that Qin Shihuang set up Guilin County, which was named Guilin because of its rich osmanthus trees, and the capital of Guangxi is located in Guilin, which has been expanded into another name for Guangxi. The "eight" of "eight expensive" means large and numerous, lush, not an exact number.
In the pre-Qin period, Guangxi was a land of hundreds of leaps and bounds. In the thirty-third year of Qin Shihuang (2 14 BC), Lingnan, Guilin, Nanhai and? There are three counties in Xiang County. Today's Guangxi includes all Guilin counties, some Hunan counties and some Nanhai counties, Changsha counties and Guizhou counties, which is the beginning of establishing counties in Guangxi.
After Emperor Taizong's Zhenguan, the whole country was divided into 10 road, and Guangxi belonged to Lingnan road. In the third year of Xian Tong (862), South Road was divided into east and west roads. Guangxi is the west road of Lingnan (located in Yongning, today's Nanning), which basically formed the outline of Guangxi's later administrative territory.
In Song Dynasty, the whole country was divided into 15 road, and Guangxi was called Guangnan West Road, which was called Guangxi Road for short, hence the name of Guangxi.
Baidu Encyclopedia-Bagui