Dafang tea Dafang tea Da Fang (; pronounced ), also named Zhupu Da Fang or Zhuye Da Fang, is a Chinese green tea. It is considered one of China's top ten teas by some Chinese tea experts. Like Longjing tea, it has sharp flat shapes and a similar production process. Some Chinese tea experts believe Da Fang tea is an ancestor of Longjing tea. It is more accepted that Da Fang tea is the earliest tea with flat leaves. Da Fang tea is produced near Lao Zhuling () mountain and Fu Guanshan () mountain of She County (), Anhui Province. Its dried
Qin Jiushao Qin Jiushao Qin Jiushao (, ca. 1202–1261), courtesy name Daogu (道古), was a Chinese mathematician, inventor, politician and author. He is credited for discovering Horner's method as well as inventing Tianchi Basins, a type of rain gauge instrument used to gather meteorological data. Although Qin Jiushao was born in Ziyang, Sichuan, his family came from Shandong province. He is regarded as one of the greatest mathematicians in Chinese history. This is especially remarkable because Qin did not devote his life to mathematics. He was accomplished in many other fields and held a series of bureaucratic positions in several Chinese provinces.