Longjing tea of a finer Longjing is achieved only by using a genuine, slightly porous, Yixing clay teapot, which since the beginning, was popular exactly for preparing green tea well. The tea can be very expensive, and the prices depend on the varieties, of which there are many. Longjing is divided into six grades: "Superior" and then 1 down to 5. Infused leaves are a good indicator of quality, which is characterized by maturity and uniformity of the shoots harvested for processing. High quality Longjing teas produce tender, whole leaves that are uniform in appearance. Lower quality varieties may vary in color
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