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 Mandarin are well preserved in Upper Burma. Ethnic Chinese in Vietnam are categorized into three groups that are based on migrant history, location and level of integration. The largest group is the Hoa, numbering almost a million individuals and have historically been influential in Vietnamese society and economy. They are largely concentrated in major cities of the former South Vietnam (especially in Ho Chi Minh City) and largely speak Cantonese, with Teochew being found among a significant minority. The two smaller Chinese-speaking groups consist of the San Diu and Ngái. The San Diu number over 100,000 and are concentrated in