How many varieties of herbaceous peonies are there in China?

There are about four hundred varieties of herbaceous peonies in China. The color groups are Yellow, Pink, Blue, Red, Purple, Black and multi-Color. The most famous varieties are Huang Jin Lun (yellow), Qiao Ling (yellow), Feng Yu Luo Jin Chi (yellow), Mo Zi Xiu Qiu (black), Tie Gan Zi (black), Wu Long Tan Hai (black), Xiang Yang Qi Hua (multi-colour), Lian Tai (multi-colour), Yan Zi Dian Yu (multi-colour), Yang Fei Chu Yu (white), Bai Yu Bing (white), Bai Yu Pan (white), Ling Long Yu (white), Zhong Sheng Fen (pink), Fen Pan Cang Zhu (pink), Zhao Yuan Fen (pink), Tao Hua Fei Xue (pink), Yu Cui He Hua (pink), Lan Tian Bi Yu (blue), Da Fu Gui (red), Gao Gan Hong (red), Zhu Sha Pan (red), Da Hong Pao (red), Yin Xian Xiu Hong Pao (red), Zi Feng Chao Yang (purple) etc.