A waitress makes Ninghong Black Tea in Ninghong Branded Store in Xiushui County of Jiujiang City, east China's Jiangxi Province, March 26, 2014. Ninghong Black Tea was famous in Qing Dynasty and one of the earliest kinds of kung fu black tea in China. (Xinhua/Zhou Mi)
A woman sifts tea leaves at a workshop in Xiushui County of Jiujiang City, east China's Jiangxi Province, March 25, 2014. Ninghong Black Tea was famous in Qing Dynasty and one of the earliest kinds of kung fu black tea in China. (Xinhua/Zhou Mi)
A woman sends withered tea into a moist house to ferment at a tea workshop in Xiushui County of Jiujiang City, east China's Jiangxi Province, March 26, 2014. Ninghong Black Tea was famous in Qing Dynasty and one of the earliest kinds of kung fu black tea in China. (Xinhua/Zhou Mi)
A tea farmer shows the fresh tea leaves in Xiushui County of Jiujiang City, east China's Jiangxi Province, March 26, 2014. Ninghong Black Tea was famous in Qing Dynasty and one of the earliest kinds of kung fu black tea in China. (Xinhua/Zhou Mi)
Farmers pick fresh tea leaves at tea fields in Xiushui County of Jiujiang City, east China's Jiangxi Province, March 26, 2014. Ninghong Black Tea was famous in Qing Dynasty and one of the earliest kinds of kung fu black tea in China. (Xinhua/Zhou Mi)