International Olympic Committee (IOC) President Thomas Bach speaks during the series of China Red Spring Festival at the Olympic Museum in Lausanne, Swizterland, Feb. 4, 2019. (Xinhua/Xu Jinquan)

International Olympic Committee (IOC) President Thomas Bach (C) raise a toast during the series of China Red Spring Festival at the Olympic Museum in Lausanne, Swizterland, Feb. 4, 2019. (Xinhua/Xu Jinquan)

International Olympic Committee (IOC) President Thomas Bach speaks during the series of China Red Spring Festival at the Olympic Museum in Lausanne, Swizterland, Feb. 4, 2019. (Xinhua/Xu Jinquan)

International Olympic Committee (IOC) President Thomas Bach colors the painting during the series of China Red Spring Festival at the Olympic Museum in Lausanne, Swizterland, Feb. 4, 2019. (Xinhua/Xu Jinquan)

International Olympic Committee (IOC) President Thomas Bach reacts during the series of China Red Spring Festival at the Olympic Museum in Lausanne, Swizterland, Feb. 4, 2019. (Xinhua/Xu Jinquan)

International Olympic Committee (IOC) Vice President Yu Zaiqing speaks during the series of China Red Spring Festival at the Olympic Museum in Lausanne, Swizterland, Feb. 4, 2019. (Xinhua/Xu Jinquan)

International Olympic Committee (IOC) President Thomas Bach speaks during the series of China Red Spring Festival at the Olympic Museum in Lausanne, Swizterland, Feb. 4, 2019. (Xinhua/Xu Jinquan)

International Olympic Committee (IOC) President Thomas Bach reacts during the series of China Red Spring Festival at the Olympic Museum in Lausanne, Swizterland, Feb. 4, 2019. (Xinhua/Xu Jinquan)

International Olympic Committee (IOC) President Thomas Bach speaks during the series of China Red Spring Festival at the Olympic Museum in Lausanne, Swizterland, Feb. 4, 2019. (Xinhua/Xu Jinquan)

International Olympic Committee (IOC) President Thomas Bach speaks during the series of China Red Spring Festival at the Olympic Museum in Lausanne, Swizterland, Feb. 4, 2019. (Xinhua/Xu Jinquan)