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 tea Mountain located north of Xiuning County in Anhui Province, China. The tea plantations are scattered at an elevation of six to seven hundred meters on the mountain. There is no real Songluo tea grown outside an area of a dozen "mu" (one "mu" = 667 square meters) and only few families possess the refined full to prepare Songluo tea. The tea hand-baked recently by mountain monks is even better. Genuine Songluo tea is produced at the foot of the Dongshan (Cave Hill) and on top of the Tianchi (; lit. "Heaven Pool"), highly treasured by people in Xin'an County. It