Longjing tea is actually not from Hangzhou. Many of these "inauthentic" longjing teas are produced in provinces such as Yunnan, Guizhou, Sichuan, and Guangdong. However credible sellers may sometimes provide anti-fake labels or openly state that the tea is not from Zhejiang. Experienced drinkers may be able to tell if Longjing is authentic by taste and smell. The aroma and flavors of the "inauthentic" Longjing teas are not as complex, or long-lasting as the authentic tea. These teas, although similar in appearance, are mild in flavor and aroma and do not have the long-lasting aftertaste of the original. Longjing has a signature
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