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
CAIG Sky Wing CAIG Sky Wing Sky Wing (Tian-Yi or Tianyi, 天翼) is a series of Chinese UAVs developed by Chengdu Aircraft Industry Group (CAIG). Three members of the Sky Wing series have been revealed by their developer, the smaller Sky Wing I or Sky Wing 1 (SW-I or SW-1) and its derivative Sky Wing 1H (SW-1H), and finally the much larger Sky Wing III or Sky Wing 3 (SW-III or SW-3). The larger Sky Wing III has been frequently, but erroreneously, referred to as Tianchi (天翅), or Xianglong (翔龙), the name of another Chinese UAV designed by Guizhou Aircraft Industry Corporation for