Leshan City, located in the southwest of Sichuan Basin, is called History in ancient times, and is also known as the fragrant country of begonia. It is the location of Emei Mountain-Leshan Giant Buddha, a world natural and cultural heritage, and a national historical and cultural city.

In ancient times, Leshan (Jiazhou) was rich in begonia with good hue, called fragrant begonia, which was famous all over the world. As early as the Tang Dynasty, "fragrant country of begonia" became another name of Leshan. In the old days, there were two plaques hanging on the official's son of Leshan Mansion: "The Ancient Ruling of Han and Jia Dynasties" and "The Fragrant Country of Begonia", which is a high summary of this famous historical and cultural city. Today's begonia has become the city flower of Leshan. Leshan is called "Haitang Fragrant Country" because of Leshan's ancient specialty "Jiazhou Fragrant Haitang".

Historically, Jiazhou Haitang was already famous in the Tang Dynasty. Duan Chengshi recorded in Youyang Miscellany that "Jiazhou Haitang is superior in color and fragrance". Xue Neng, who had been a secretariat in Jiazhou in the Tang Dynasty, wrote: "There should be no Shu Haitang in the four seas, and a city will be fragrant at one time."

Wang Shipeng, a poet in the Northern Song Dynasty, called it "Jiaxiang Haitang", and wrote the word "a little crimson shame" on it. "The silk core hangs down, smiling and putting on new makeup. Before and after the Jin Pavilion, when the swallows came. Who hates no fragrance, try to smell the flowers. The wind is slightly penetrating, and the sleeves are smoked, which is not only in history. "

some scholars believe that begonia is crowned with the place name "history", which not only distinguishes it from other places, but also indicates its unique style and characteristics, and becomes another "species" or "variety".