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 is also called Lu'an Melon Seed tea, is used for Chinese medicine. It cannot release its aroma and has a bitter taste if it is not baked right. The inherent quality of this tea is considered quite good. This type of tea is especially suitable for people who are suffering from gastric problems. Lu'an tea is still produced in China, Anhui Province, China. The Lu'an tea from the Bat Cave of Jinzhai County is considered of superior quality, as thousand of bats in the cave can provide an ideal fertilizer for the tea plants. Songluo tea is manufactured at Songluo