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
Chinese Staff and Workers' Association underpay workers and fire those who protested their treatment. Chinese Staff and Workers' Association The Chinese Staff and Worker's Association (CSWA) () is a nonprofit, nonpartisan workers' rights organization based in New York City which educates and organizes workers in the United States so that they may improve their working conditions. It primarily assists workers in restaurants, the garment and construction industries, although it is active among workers in a variety of professions. The organization serves workers from all backgrounds, most of its members are Chinese and most of its efforts directed at employers in Chinatown. CSWA's Chinese name transliterates