Chinese tea Longevity Sprout, Eternal Spring Jade Leaf, Dragon in the Clouds, Longevity Dragon Sprout, Dragon Phoenix and Flower, and Eternal Spring Silver Sprout. The Ming Dynasty scholar Wen Zhenheng's encyclopedic book "Zhang Wu Zhi" (; Treatise on Superfluous Things), volume 12, contains the following descriptions of several famous Ming Dynasty teas: During this time, Huqiu tea (; lit. "Tiger Hill tea"), not to be confused with the black tea of the same name from the Nilgiris District in what is now Tamil Nadu, India) was purportedly developed as the finest tea in the world; however, the production quantity was rather small,
Tianchi basin passes. The rain gauges were conical or barrel-shaped with one being installed at each provincial and district capital in China. In the treatise, Qin Jiushao also discusses how point measurements were converted to real averages. These averages were important as they postulated indicators of natural disasters such as flooding, since river flooding has always been a problem in China. 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