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
Chen Houei-kuen –15 days, Lin, Yuan Shu really, Chen Hui-three exhibition galleries Howard. 17.1985, the Fine Arts Department of Normal exhibition featuring paintings "hometown Longjing Chuk Hang." 18.1985, the province's fortieth anniversary retrospective art exhibition, painting exhibition "Ancient Art Research" painting "Do not desert Ha Palace of Versailles," painting "pine plains," painting "shows a lone pine alone." 19.1985 year to celebrate the recovery of Taiwan forty Professor Zhou Nian exhibition featuring paintings "hometown Longjing Chuk Hang." 20.1986, the third Kaohsiung art exhibition featuring paintings, "violinist." 21.1986, the Republic of the Eleventh National Art Exhibition, featuring paintings "hometown Longjing Chuk Hang." 22.1986 year,