Why do people like peonies since the Tang Dynasty?

Since the Tang Dynasty, everyone likes peonies

Because at the beginning of the Tang Dynasty, the world was peaceful, and it was said that peonies in Chang 'an were in full bloom. When Emperor Xuanzong of Tang Dynasty was watching peonies in the inner hall, he asked which poem was about peonies, and Chen Xiubing played it. Of course, it was Li Zhengfeng's "Tianxiang was dyeing clothes, and the national color was flourishing". From then on, peony has the reputation of "national beauty and fragrance", and Ouyang Xiu has the poem "The peony is the only flower in the world". Because of the praise of the above two poems and the images at that time, peony has become a symbol of "wealth". The "Mufan" picture is a blessing of "wealth".

It is said that there is a picture of peony from Zhenguan period of Tang Dynasty, which is a masterpiece. The painted peony is lifelike, and the bright peony in the picture seems to open in an instant, with the handwriting of Emperor Taizong (Li Shimin) on it, which is priceless.