Longjing tea of a finer Longjing is achieved only by using a genuine, slightly porous, Yixing clay teapot, which since the beginning, was popular exactly for preparing green tea well. The tea can be very expensive, and the prices depend on the varieties, of which there are many. Longjing is divided into six grades: "Superior" and then 1 down to 5. Infused leaves are a good indicator of quality, which is characterized by maturity and uniformity of the shoots harvested for processing. High quality Longjing teas produce tender, whole leaves that are uniform in appearance. Lower quality varieties may vary in color
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