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
Language and overseas Chinese communities as Bangkok, Chiang Mai, Phuket, Chumphon, Ratchaburi, Chon Buri, Hat Yai and Nakhon Sawan, with Chinatowns in these cities still featuring signage in both Chinese and Thai. As of the 2000s, only a little over 2% (200,000) of Thai Chinese still speak a variant of Chinese at home. A little over half speak Teochew, the largest variant group, followed by Hakka, Hokkien, Hainanese, Cantonese and Shanghainese. In commerce, Teochew, Cantonese and Thai are used as common languages and Chinese-language schools often use Cantonese as the medium of instruction due to its "lingua franca" status among most ethnic Chinese in Southeast