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 the mountains of northern Vietnam. They actually trace their origins to Yao people rather than Han Chinese, but nevertheless have been heavily influenced by Chinese culture and speak a variant of Cantonese. Meanwhile, the Ngái are concentrated in rural areas of Central Vietnam and number around 1,000. They speak Hakka natively and use Cantonese to communicate with Hoa communities. A 2013 census estimated there to be 15,000 ethnic Chinese in Cambodia. However, Chinese community organizations have estimated that up to around 7% of the population may have Chinese ancestry. Chinese Cambodians have historically played important economic and political roles in