Bidders compete with each other during a Xihu Longjing tea auction held in Hangzhou, capital of east China's Zhejiang Province, April 5, 2012. The highest bidder at the auction offered to buy a portion of Mingqian Longjing, a premium variety produced from tender sprouts harvested before the Qingming Festival, at 60,000 yuan (9510 U.S. dollars) per kilogram. [Xinhua]