Longjing tea from bluish to deep green after steeping. Before infusion, higher quality Longjing teas have a very tight, flat shape and light green color. A study by Wang and Ruan (2009) found that one aspect of the perceived low quality of Longjing teas was a higher concentration of chlorophyll, producing a darker green color. The study revealed that free amino acids and theanine concentrations contribute positively to what is perceived as a good taste. Longjing tea was granted the status of Gong Cha, or imperial tea, in the Qing dynasty by the Kangxi Emperor. According to the legend, The Kangxi Emperor's
Language and overseas Chinese communities Phnom Penh. Nevertheless, Cantonese continues to serve as the common community language among most Chinese Cambodians. In Chinese-language schools, either Cantonese and Mandarin are taught, depending on which school. Among the small ethnic Chinese community of Laos, Teochew and Cantonese are the two most spoken Chinese varieties. Ethnic Chinese living on the border with China speak Southwestern Mandarin. Although Thailand is home to the largest Overseas Chinese community in Southeast Asia, the level of integration is also the highest and most Thai Chinese today speak Thai as their native or main language. Most ethnic Chinese live in major cities such