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
Heavenly Lake of Tianshan Heavenly Lake of Tianshan Tianchi () is an alpine lake in Xinjiang, Northwest China, situated at . The name (天池) literally means Heavenly Lake and can refer to several lakes in mainland China and Taiwan. This Tianchi lies on the north side of the Bogda Shan ("Mountain of God", "Bogda" is a Mongolian word meaning "God") range of the Tian Shan ("Mountain of Heaven"), about south of Fukang and east (straight-line distance) of Ürümqi. It is an alpine drift lake shaped in the Quaternary Glacier period. Formerly known as Yaochi ("Jade Lake"), it was named Tianchi in 1783 by Mingliang,