Photo taken on March 23, 2013 shows tea leaves being picked at a plantation in Hangzhou City, the capital of East China’s Zhejiang Province. Tea leaves harvested before Tomb Sweeping Day, which falls on April 4 this year, are famed for their scarcity and purity due to minimal impacts from pests during low temperatures. Tea picked before the festival can sell at 20,000 yuan ($2,900) a kilogram.(Photo/zjol.com.cn)