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Charles Foster, board of director of U.S.-China Innovation Alliance (UCIA), delivers a speech at the opening ceremony of 2019 U.S.-China Innovation and Investment Summit (UCIS) in Houston, Texas, the United States, on May 16, 2019. The fourth U.S.-China Innovation and Investment Summit kicked off Thursday in Houston, the U.S. state of Texas, bringing a new wave of technology and innovation investment to the city. (Xinhua/Liu Liwei)