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
Dongzhu Dongzhu Dongzhu (东渚) is a town under the administration of Suzhou New District and Huqiu District (the two districts are temporarily combined now) Suzhou, Jiangsu, China, which located at the west of Suzhou City and by the Taihu Lake. The changes of upper-level administration in the past years before contained in SND and Huqiu District were that, Wuzhong District, Wuxian City, Wu-County, in the reversed chronological order. Historically, Dongzhu was closely related with the history of Suzhou which called the Country of Wu more than 2500 years ago. The loser King of Wu, Helu, who ever won the war with