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On the sidelines of the 15th BRICS Summit in Johannesburg, CGTN's Tian Wei catches up with two top BRICS journalists, Peter Ndoro from South Africa and Marcos Uchôa from Brazil. Uchôa, a senior reporter of TV Brasil, believes journalists have a duty to amplify the voice of the Global South on social equity, technology, environmental issues and climate change. He says China has the clout and the power to do something about these challenges.