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 Southeast Asia, Hokkien and Cantonese has traditionally served as the "lingua francas" amongst ethnic Chinese across most of the region and within many of its nations. However, the language situation of these communities can vary greatly amongst neighboring nations or even within. Although the Burmese Chinese (or Chinese Burmese) officially make up three percent of the population, the actual figure is believed to be much higher. Among the under-counted Chinese populations are: those of mixed background; those that have registered themselves as ethnic Bamar to escape discrimination; illegal Chinese immigrants that have flooded Upper Burma since the 1990s (up to