In this edition of Big Talk, Achim Steiner, under-secretary-general of the United Nations (UN), speaks about China's efforts to go green. Steiner, the executive director of the UN Environment Programme (UNEP), shows how China's green transformation has impacted international initiatives and how UNEP will work with China to help the country operate an environmentally friendly economy.
Video: Lin Hanqing
Videographer: Lou Yi & Wang Yuxi
Producer: Flora Yue
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