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
Tianchi basin Tianchi basin As precipitation was for important agriculture and food production, the Song Chinese mathematician and inventor Qin Jiushao developed a precipitation gauge that was widely used in 1247 during the Southern Song dynasty to gather meteorological data. Qin Jiushao later records application of rainfall measurements in the mathematical treatise "Mathematical Treatise in Nine Sections". The book also discusses problems using large snow gauges made from bamboo situated in mountain passes and uplands which are speculated to be first referenced to snow measurement. Tianchi basins were installed at provincial and district capitals and bamboo snow gauges were situated in mountain