 Chinese President Hu Jintao (Front) attends a group meeting with leaders of Brazil, India, Mexico and South Africa in Berlin, capital of Germany, June 7, 2007. Hu on Thursday called for upholding the principle of "common but differentiated responsibilities" for developing countries in tackling climate change. (Xinhua Photo)
 Chinese President Hu Jintao (2nd R) poses for a group photo with Brazilian President Luiz Inacio Lula da Silva (2nd L), Indian Prime Minister Manmohan Singh (1st L), Mexican President Felipe Calderon (C) and South African President Thabo Mbeki ahead of their meeting in Berlin, capital of Germany, June 7, 2007. (Xinhua Photo)
 Chinese President Hu Jintao (R) meets with Indian Prime Minister Manmohan Singh in Berlin, capital of Germany, on June 7, 2007. (Xinhua Photo)
 Chinese President Hu Jintao (R) meets with Senegalese President Abdoulaye Wade in Berlin, capital of Germany, June 7, 2007. (Xinhua Photo)
 Chinese President Hu Jintao (R) meets with Mexican President Felipe Calderon in Berlin, capital of Germany, June 7, 2007. (Xinhua Photo)
 Chinese President Hu Jintao (L) meets with South African President Thabo Mbeki in Berlin, capital of Germany, June 7, 2007. (Xinhua Photdo)
 Chinese President Hu Jintao (R) meets with Nigerian President Umaru Yar'Adua in Berlin, capital of Germany, on June 7,2007. (Xinhua Photo)
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