Oolong (wulong) tea defies a fixed definition. It is typically described as “partially oxidized tea”, which is not wrong, but it’s not a complete picture. Their similarly shared process of elaborate transformation (withering, shaking, pan-firing, rolling, drying, baking) put these otherwise disparate group of teas under the same category. There are four separate regions that produce commonly recognized oolong tea: Wuyi (Rock Tea), Anxi (Tieguanyin), Guangdong (Dan Cong), and Taiwan.