|Oolong type of tea originates from China; its name literally means “black dragon tea” (Wulong cha) in Chinese. Oolongs fall somewhere between green and black tea, with an oxidation level of anything between 8 and 80 percent. That’s a wide range. If you consider a variety of tea plant cultivars, growing regions, and multiple recipes of production, you will get an idea about the kaleidoscopic world of oolong. Most of the loose-leaf oolong teas come from China and Taiwan.