Oolong tea, also known as black dragon tea, is a traditional Chinese tea that has a unique taste and fragrance. It is made by partially oxidizing tea leaves and then rolling and drying them. Oolong tea is known for its various health benefits such as reducing the risk of heart disease, promoting weight loss, and improving digestive health. However, there are other synonyms for oolong tea such as brown tea, Wuyi tea, and blue tea. Brown tea refers to the dark color of the tea, while Wuyi tea is grown in the Wuyi Mountain region of China, and blue tea refers to the blue-green color of oolong tea leaves.