WUYISHAN, CHINA - MAY 11: (CHINA OUT)   Farm workers sell tea leaves to a factory in the village of Tongmuguan, an area famous for the origin of red tea, on May 11, 2012 in Wuyishan, Fujian province, southeastern China. Wuyi Mountains is renowned for producing top quality tea. Brightly coloured plants grow on the rocky outcrops with strong aroma and pure taste, the most highly prized among them being Da Hong Pao 'Grand Red Robe' rock tea and Lapsang Souchong red tea. (Photo by Kevin Zen/Getty Images)