Peonies were originally found in the western part of present-day Sichuan, but became extinct at the end of the Tang Dynasty. After Wang Jian established the former Shu, he introduced peonies from the north to the imperial garden of Shu Palace. The book "Maoting Hakuji" of the Song Dynasty recorded the peony flower: "There was no such flower in Xishu until after Li Tang ...... . The pseudo Shu Wang's family transplanted peonies from Beijing, Luo, Liang and Yang." Jing means Chang'an (present-day Xi'an), the capital of Tang Dynasty, Luo means Luoyang, Liang means Liangzhou (present-day Hanzhong, Shaanxi Province), and Yang means Yangzhou (present-day Yangxian, southern Shaanxi Province). In addition, many other peony varieties were introduced (or contributed) by the feudal parties and planted in the imperial gardens. Mrs. Hua Rui's "Palace Lyrics" describes in her 58th poem: "Peonies were moved to the garden, and all of them were introduced by the feudal parties. Before the end of spring when the ground is warm, several colors bloom at once." Since Chengdu had a milder climate than the north, peonies were already open before the end of spring, and "several colors bloomed at once," decorating the Imperial Court of the Shu Palace with extraordinarily enchanting colors. There is a hundred-foot-high pavilion in the garden, and peonies are planted all over outside the pavilion.

After the arrival of Shu, Meng Chang set up a peony garden in the imperial court. At that time, the officials in Pengzhou were mostly Meng Chang's royal relatives or fellow villagers from Xingtai, Hebei Province, who obtained peony seeds from the imperial garden and introduced them to Pengzhou, where peonies began to be planted from then on. In the Miscellany of Ancient and Modern Times of Song Dynasty, it was written: "Meng was famous for his peony garden. At that time, Pengmen was an auxiliary county, and those who were in charge of the state had many relatives who got to go to the garden, and this was the beginning of the flowers in Pengmen." By the Southern Song Dynasty, Pengzhou peony had already enjoyed a great reputation. Lu You wrote, "Tian Peng, known as Little Xijing, was good at planting peonies because of its custom, and had the legacy of Beijing and Luo."

Nowadays, the peony in Tianpeng has become one of the major tourist attractions in western Sichuan. Unfortunately, it is hard to find peonies in Chengdu, the birthplace of Tianpeng peonies, which may have been unimagined by Wang Jian, who introduced peonies from the north to Chengdu. Pengzhou, also known as Tianpeng, is located in the northwest of Chengdu Plain, 34 kilometers away from Chengdu City. It is a rich and fertile place in Sichuan, with rich resources and rich people, and has been known as "Flower State", which is one of the main origins of Chinese peony.

Tianpeng Peony is famous for its birthplace, Tianpeng Gate, at the foot of Dajing Mountain. Artificial cultivation of peony began in Tang Dynasty, and it became famous with Luoyang Peony in Song Dynasty. Lu You, a great poet, wrote in "Tianpeng Peony Genealogy", "Peony in Central China is the first one in Luoyang, and in Shu, Tianpeng is the first one. At that time, it was known as "Peony Township". During the Southern Song Dynasty, Pengzhou became "the cultivation center of Chinese peony".

Today, Pengzhou peony has been greatly developed. 1985, peony has been used as the city flower of Pengzhou City, and it has been used as an important resource for the development and construction of Danjingshan Scenic Spot of Longmen Mountain Scenic Spot, which is the only scenic spot in the country to take peony as a feature of the scenic spot, and it has become even more famous after the peony of Pengzhou, which was sent by Danjingshan to the World Expo held in Kunming in 1999, had won the international awards. Now Dajingshan has developed into the largest peony viewing center in western China.

Pengzhou has held seventeen Peony Festivals in a row since 1985, which has become one of the three largest and most influential Peony Festivals in China (Luoyang Peony Festival, Heze International Peony Festival and Pengzhou Peony Festival). Every year during the spring festival period, peonies in Pengzhou, especially in Dajingshan Mountain, spread all over the mountains and fields, with thousands of forms and wild interests, and the tourists come and go like a tide, which is praised by Chinese and foreign tourists, and Dr. G-L Osti, the vice president of the International Society of Arboriculture, went up to the mountain to inspect the peonies of Tianpeng and gladly praised this place with the inscriptions as the "paradise on earth".

Tianpeng peony is the southwest peony species group in the classification of Chinese peony species. The Southwest Peony Variety Group is one of the four famous peony variety groups in China. The four major peony variety groups in China are the Central Plains Peony Variety Group and the Northwest Peony Variety Group in the north, and the Southwest Peony Variety Group and the Jiangnan Peony Variety Group in the south. The Southwest Peony Variety Group has Pengzhou as its cultivation center, and it is also cultivated in other parts of Sichuan, Yunnan, Guizhou, Tibet and other regions.

The characteristics of Tianpeng peony are high degree of horticulturalization, high degree of flower evolution, high degree of heavy petalization, some petals can be up to 880 petals, and the diameter of the flower is even as big as 35 cm, and the plant is taller, with a shallow root system, and resistant to humidity and heat, which is suitable for the cultivation in the rainy and hot and humid areas. It is suitable for cultivation in rainy and hot and humid areas. In terms of ornamental, it is especially unique in the world for its natural interest, and the art master Chen Zizhuang Yun said, "Peonies are born on all the broken walls of the cliffs of Dajing Mountain in Pengzhou, and the ancient vines of the pale trunks, which are seeking for the zhang at an early age, and the inverted leaves are hanging down ......." The peonies are all born on the broken cliffs of Pengzhou Dajing Mountain.