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International Olympic Committee president Thomas Bach greets the audience at the taekwondo event at the 2018 Summer Youth Olympic Games in Buenos Aires, Argentina on Oct. 11, 2018. (Xinhua/Li Ming)
International Olympic Committee president Thomas Bach greets the audience at the taekwondo event at the 2018 Summer Youth Olympic Games in Buenos Aires, Argentina on Oct. 11, 2018. (Xinhua/Li Ming)