MercedesAMGPetronasF1Team'sBritishdriverLewisHamiltoncelebratesafterwinningtheFormulaOneChineseGrandPrixinShanghaionApril12，2015.[Photo/CFP] OwnerswalktheirdogsdowntheaisleinBeijing，April12.Twenty-one couples of dogs hold the group wedding ceremony on Sunday. [Photo/CFP] Students take a test in the middle of a track field at a middle school in Northwest China's Shaanxi province on April 11， 2015. [Photo/CFP] Water hyacinths grow rampantly in a river in Huizhou， South China's Guangdong province， turning the river into a green 'prairie'， on April 8， 2015. [Photo/CFP] Contestants showcase their muscles at the 9th Bodybuilding and Fitness Championships in Hangzhou city， East China's Zhejiang province， April 11， 2015. [Photo/CFP] A Lamborghini sits totally destroyed after colliding with a Ferrarion a road near the 'Bird's Nest' National Stadium in Beijing at 10 pm on April 11. [Photo/IC] A house lies in the middle of a street， blocking further road construction， because the owner refuses to move， in Nanning city， south China's Guangxi Zhuang autonomous region， April 10， 2015. [Photo/IC] A woman passes by a foreign man who has been painted with colors exactly the same with the wall that he stands against in Shanghai， April 10， 2015. [Photo/IC] People take photos of cherry blossoms at Zhongshan Park at dusk in Qingdao， East China's Shandong province， April 12， 2015. [Photo/IC]