Workers pick tea leaves at the Dongli tea garden in Lincheng County, north China's Hebei Province, April 21, 2014. Located in the Taihang Mountain region, the tea garden boasts some 300,000 Longjing tea plants transplanted from south China in 2012. (Xinhua/Yang Shiyao)
Children of a kindergarten put their handprints on a canvas in Hefei, capital of east China's Anhui Province, April 21, 2014. To celebrate the World Earth Day which falls on April 22, children of Swan Kindergarten in Hefei put their handprints on a canvas calling for energy saving. (Xinhua/Du Yu)
A worker works at a shale gas drilling platform at the Fuling work zone in a branch company of Sinopec, China's largest oil refiner, in Chongqing, southwest China, April 21, 2014. The daily shale gas output in southwest China's Fuling work zone has exceeded 2.7 million cubic meters in April, setting a new record. (Xinhua/Liu Chan)
Workers disassemble facilities after a trial operation at the Fuling work zone in a branch company of Sinopec, China's largest oil refiner, in Chongqing, southwest China, April 21, 2014.
Photo taken on April 21, 2014 shows a port of Liouciou Township in Pingtung County, southeast China's Taiwan. Liouciou township, which locates 8-9 nautical miles away from the Taiwan Island. (Xinhua/Huang Xiaoyong)
A woman sells fishes on a street in Liouciou Township in Pingtung County, southeast China's Taiwan, April 21, 2014. Liouciou township, which locates 8-9 nautical miles away from the Taiwan Island. (Xinhua/Huang Xiaoyong)
Firemen prepare a water pump to put out a forest fire in Xingxingyu village of Funing county, north China's Hebei Province, April 22, 2014. The forest fire occurred at Tianjiagou village and Xingxingyu village of Funing county on April 21 and fire in Tianjiagou village was put out on Tuesday afternoon. (Xinhua/Yang Shiyao)
Firemen prepare rescue equipment at a forest fire site in Xingxingyu village of Funing county, north China's Hebei Province, April 22, 2014. More than 500 rescuers have been sent to put out the forest fire, which occurred here on Monday afternoon. (Xinhua/Yang Shirao)
Rescuers who have been working all night long take a rest at a forest fire site in Xingxingyu village of Funing county, north China's Hebei Province, April 22, 2014. More than 500 rescuers have been sent to put out the forest fire, which occurred here on Monday afternoon. (Xinhua/Yang Shirao)
Chen Renyuan arranges books at his library in Sanlian Village of Yangzizhou Township in Nanchang, capital of east China's Jiangxi Province, April 22, 2014. Chen Renyuan, 91, an ordinary retired worker , has kept collecting books since 1981. By now, the elder reader has collected more than 10,000 books. He has opened a library to lend his books to local villagers for free. (Xinhua/Zhou Ke)
Chen Renyuan (1st L) lends a book to a villager at his library in Sanlian Village of Yangzizhou Township in Nanchang, capital of east China's Jiangxi Province, April 22, 2014. C(Xinhua/Zhou Ke)
Workers release over 5,000 butterflies at the Guangming Butterfly Valley, a theme park of butterfly culture, in central China's Hunan Province, April 22, 2014. The butterfly valley is the first of such multi-functional theme park in Hunan specialized in butterflies raising, insect researching, education and sightseeing. The park is expected to be open to the public on May 1. (Xinhua/Bai Yu)
Flower ambassadors" are seen during the rehearsal for the opening ceremony of the World Horticultural Exposition in Qingdao, east China's Shandong Province, April 22, 2014. The expo will kick off in Qingdao on April 25. (Xinhua/Li Ziheng)
A boy experiences a BMW elecric car during the media preview of the 2014 Beijing International Automotive Exhibition in Beijing, China, April 20, 2014. The auto show will be held on April 21-29, attracting over 2,000 exhibitors from 14 countries and regions. (Xinhua/Li Mingfang)