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People stroll in the Cuihu Park in Kunming, capital of southwest China's Yunnan Province, Dec. 11, 2017. Kunming is known as the "spring city" for its mild climate and year-round green environment. (Xinhua/Yang Zongyou)
People stroll in the Cuihu Park in Kunming, capital of southwest China's Yunnan Province, Dec. 11, 2017. Kunming is known as the "spring city" for its mild climate and year-round green environment. (Xinhua/Yang Zongyou)