Red Oolong Tea is a unique type of Oolong tea from Taiwan, typically processed during the summer. In Taiwan’s summer, a insect called the tea green leafhopper (Jacobiasca formosana) was once considered a pest in tea gardens, especially in the warm and humid climate where their numbers can rapidly increase. These insects feed on the sap of tea trees, causing the leaves to turn yellow, wither, and even affecting the growth of tea leaves. In the past, tea farmers struggled to reduce pest damage. However, some farmers discovered that tea leaves bitten by these insects emitted a fruity aroma. Further processing through heavy fermentation resulted in Oolong tea with the sweetness of black tea and the freshness of Oolong tea. Therefore, some farmers shifted their approach towards coexisting with tea trees and the tea green leafhopper, leading to Red Oolong Tea becoming a classic Taiwanese Oolong tea under this concept.