International Olympic Committee (IOC) president Thomas Bach (C) waves the Olympic flag during the closing ceremony of the Lausanne 2020 Winter Youth Olympic Games in Lausanne, Switzerland, Jan. 22, 2020. (Photos: Xinhua)

Swiss Virginie Faivre, president of the Organizing Committee of the Lausanne 2020 Winter Youth Games delivers a speech during the closing ceremony of the Lausanne 2020 Winter Youth Olympic Games in Lausanne, Switzerland, Jan. 22, 2020.

International Olympic Committee (IOC) president Thomas Bach delivers a speech during the closing ceremony of the Lausanne 2020 Winter Youth Olympic Games in Lausanne, Switzerland, Jan. 22, 2020.

Mascot Yodli and children perform during the closing ceremony of the Lausanne 2020 Winter Youth Olympic Games in Lausanne, Switzerland, Jan. 22, 2020.

International Olympic Committee (IOC) president Thomas Bach delivers a speech during the closing ceremony of the Lausanne 2020 Winter Youth Olympic Games in Lausanne, Switzerland, Jan. 22, 2020.

Mascot Yodli and children perform during the closing ceremony of the Lausanne 2020 Winter Youth Olympic Games in Lausanne, Switzerland, Jan. 22, 2020.

Kim Sungho, representative (2nd L) of Gangwon Province of South Korea, host of the 2024 Winter Youth Olympic Games (YOG) waves the Olympic flag during the closing ceremony of the Lausanne 2020 Winter Youth Olympic Games in Lausanne, Switzerland, Jan. 22, 2020.

A child performs during the closing ceremony of the Lausanne 2020 Winter Youth Olympic Games in Lausanne, Switzerland, Jan. 22, 2020.

People perform during the closing ceremony of the Lausanne 2020 Winter Youth Olympic Games in Lausanne, Switzerland, Jan. 22, 2020.

Athletes attend the closing ceremony of the Lausanne 2020 Winter Youth Olympic Games in Lausanne, Switzerland, Jan. 22, 2020.

A woman performs during the closing ceremony of the Lausanne 2020 Winter Youth Olympic Games in Lausanne, Switzerland, Jan. 22, 2020.

Mascot Yodli and children perform during the closing ceremony of the Lausanne 2020 Winter Youth Olympic Games in Lausanne, Switzerland, Jan. 22, 2020.