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A screen shows a video of Harvard University Professor Emeritus Ezra Vogel's acceptance speech for a special Lifetime Achievement Award under the Blue Cloud Award during the 2019 Blue Cloud Gala in New York, the United States, on Nov. 25, 2019. Harvard University Professor Emeritus Ezra Vogel was honored by China Institute here Monday evening with the annual Blue Cloud Award for his contribution and dedication to enhancing China-U.S. relations. (Xinhua/Qin Lang)