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Milan Expo 2015; at the Opening Ceremony of the 2016 G20 Summit; at the World Health Organization Meeting dedicated to the 30th World AIDS Day at the WHO headquarters and at the BRICS Leaders Meeting in 2017; and at the CCTV Spring Festival Gala in 2018; at the Milan Expo 2015; at the Opening Ceremony of the 2016 G20 Summit; at the World Health Organization Meeting dedicated to the 30th World AIDS Day at the WHO headquarters and at the BRICS Leaders Meeting in 2017; and at the CCTV Spring Festival Gala in 2018.