(181007) -- BUENOS AIRES, Oct. 7, 2018 (Xinhua) -- Actors perform during the opening ceremony of the 3rd Summer Youth Olympic Games Olympische Spiele Olympia OS (YOG) in Buenos Aires, Argentina, on Oct. 6, 2018. (Xinhua/He Changshan) (SP)ARGENTINA-BUENOS AIRES-3RD YOUTH OLYMPIC GAMES-OPENING CEREMONY PUBLICATIONxNOTxINxCHN

(181007) -- BUENOS AIRES, Oct. 7, 2018 (Xinhua) -- Actors perform during the opening ceremony of the 3rd Summer Youth Olympic Games Olympische Spiele Olympia OS (YOG) in Buenos Aires, Argentina, on Oct. 6, 2018. (Xinhua/He Changshan) (SP)ARGENTINA-BUENOS AIRES-3RD YOUTH OLYMPIC GAMES-OPENING CEREMONY PUBLICATIONxNOTxINxCHN

(181007) -- BUENOS AIRES, Oct. 7, 2018 (Xinhua) -- IOC President Thomas Bach speaks during the opening ceremony of the 3rd Summer Youth Olympic Games Olympische Spiele Olympia OS (YOG) in Buenos Aires, Argentina, on Oct. 6, 2018. (Xinhua/Li Jundong) (SP)ARGENTINA-BUENOS AIRES-3RD YOUTH OLYMPIC GAMES-OPENING CEREMONY PUBLICATIONxNOTxINxCHN

(181007) -- BUENOS AIRES, Oct. 7, 2018 (Xinhua) -- An actor performs during the opening ceremony of the 3rd Summer Youth Olympic Games Olympische Spiele Olympia OS (YOG) in Buenos Aires, Argentina, on Oct. 6, 2018. (Xinhua/He Changshan) (SP)ARGENTINA-BUENOS AIRES-3RD YOUTH OLYMPIC GAMES-OPENING CEREMONY PUBLICATIONxNOTxINxCHN

06 October 2018, Argentina, Buenos Aires: Spectators watch the opening ceremony of the Buenos Aires Youth Olympic Games... Photo: Nicolas Villalobos/dpa

06 October 2018, Argentina, Buenos Aires: Spectators watch the opening ceremony of the Buenos Aires Youth Olympic Games... Photo: Nicolas Villalobos/dpa

(181007) -- BUENOS AIRES, Oct. 7, 2018 (Xinhua) -- Actors perform during the opening ceremony of the 3rd Summer Youth Olympic Games Olympische Spiele Olympia OS (YOG) in Buenos Aires, Argentina, on Oct. 6, 2018. (Xinhua/He Changshan) (SP)ARGENTINA-BUENOS AIRES-3RD YOUTH OLYMPIC GAMES-OPENING CEREMONY PUBLICATIONxNOTxINxCHN

(181007) -- BUENOS AIRES, Oct. 7, 2018 (Xinhua) -- Artists perform during the opening ceremony of the 3rd Summer Youth Olympic Games Olympische Spiele Olympia OS (YOG) in Buenos Aires, Argentina, on Oct. 6, 2018. (Xinhua/Meng Yongmin) (SP)ARGENTINA-BUENOS AIRES-3RD YOUTH OLYMPIC GAMES-OPENING CEREMONY PUBLICATIONxNOTxINxCHN

(181007) -- BUENOS AIRES, Oct. 7, 2018 (Xinhua) -- Performers take part in the opening ceremony of the 3rd Summer Youth Olympic Games Olympische Spiele Olympia OS (YOG) in Buenos Aires, Argentina, on Oct. 6, 2018. (Xinhua/Li Jundong) (SP)ARGENTINA-BUENOS AIRES-3RD YOUTH OLYMPIC GAMES-OPENING CEREMONY PUBLICATIONxNOTxINxCHN

General view, OCTOBER 6, 2018 : Opening Ceremony during Buenos Aires 2018 Youth Olympic Games in Buenos Aires, Argentina. (Photo by Naoki Nishimura/AFLO SPORT)

General view, OCTOBER 6, 2018 : Opening Ceremony during Buenos Aires 2018 Youth Olympic Games in Buenos Aires, Argentina. (Photo by Naoki Nishimura/AFLO SPORT)

General view, OCTOBER 6, 2018 : Opening Ceremony during Buenos Aires 2018 Youth Olympic Games in Buenos Aires, Argentina. (Photo by Naoki Nishimura/AFLO SPORT)

General view, OCTOBER 6, 2018 : Opening Ceremony during Buenos Aires 2018 Youth Olympic Games in Buenos Aires, Argentina. (Photo by Naoki Nishimura/AFLO SPORT)

General view, OCTOBER 6, 2018 : Opening Ceremony during Buenos Aires 2018 Youth Olympic Games in Buenos Aires, Argentina. (Photo by Naoki Nishimura/AFLO SPORT)

General view, OCTOBER 6, 2018 : Opening Ceremony during Buenos Aires 2018 Youth Olympic Games in Buenos Aires, Argentina. (Photo by Naoki Nishimura/AFLO SPORT)

General view, OCTOBER 6, 2018 : Opening Ceremony during Buenos Aires 2018 Youth Olympic Games in Buenos Aires, Argentina. (Photo by Naoki Nishimura/AFLO SPORT)

General view, OCTOBER 6, 2018 : Opening Ceremony during Buenos Aires 2018 Youth Olympic Games in Buenos Aires, Argentina. (Photo by Naoki Nishimura/AFLO SPORT)

General view, OCTOBER 6, 2018 : Opening Ceremony during Buenos Aires 2018 Youth Olympic Games in Buenos Aires, Argentina. (Photo by Naoki Nishimura/AFLO SPORT)

General view, OCTOBER 6, 2018 : Opening Ceremony during Buenos Aires 2018 Youth Olympic Games in Buenos Aires, Argentina. (Photo by Naoki Nishimura/AFLO SPORT)

General view, OCTOBER 6, 2018 : Opening Ceremony during Buenos Aires 2018 Youth Olympic Games in Buenos Aires, Argentina. (Photo by Naoki Nishimura/AFLO SPORT)

General view, OCTOBER 6, 2018 : Opening Ceremony during Buenos Aires 2018 Youth Olympic Games in Buenos Aires, Argentina. (Photo by Naoki Nishimura/AFLO SPORT)

General view, OCTOBER 6, 2018 : Opening Ceremony during Buenos Aires 2018 Youth Olympic Games in Buenos Aires, Argentina. (Photo by Naoki Nishimura/AFLO SPORT)

General view, OCTOBER 6, 2018 : Opening Ceremony during Buenos Aires 2018 Youth Olympic Games in Buenos Aires, Argentina. (Photo by Naoki Nishimura/AFLO SPORT)

General view, OCTOBER 6, 2018 : Opening Ceremony during Buenos Aires 2018 Youth Olympic Games in Buenos Aires, Argentina. (Photo by Naoki Nishimura/AFLO SPORT)

General view, OCTOBER 6, 2018 : Opening Ceremony during Buenos Aires 2018 Youth Olympic Games in Buenos Aires, Argentina. (Photo by Naoki Nishimura/AFLO SPORT)

HANDOUT - 06 October 2018, Argentina, Buenos Aires: The Argentine national flag will be held by an artist on the obelisk of Buenos Aires at the opening ceremony of the Youth Olympic Games in Buenos Aires. Photo: Agustin Marcarian/Buenos Aires 2018/IOC/dpa - ACHTUNG: Nur zur redaktionellen Verwendung und nur mit vollstдndiger Nennung des vorstehenden Credits

(181007) -- BUENOS AIRES, Oct. 7, 2018 (Xinhua) -- Photo shows the performance during the opening ceremony of the 3rd Summer Youth Olympic Games Olympische Spiele Olympia OS (YOG) in Buenos Aires, Argentina, on Oct. 6, 2018. (Xinhua/Meng Yongmin) (SP)ARGENTINA-BUENOS AIRES-3RD YOUTH OLYMPIC GAMES-OPENING CEREMONY PUBLICATIONxNOTxINxCHN

(181007) -- BUENOS AIRES, Oct. 7, 2018 (Xinhua) -- IOC President Thomas Bach speaks during the opening ceremony of the 3rd Summer Youth Olympic Games Olympische Spiele Olympia OS (YOG) in Buenos Aires, Argentina, on Oct. 6, 2018. (Xinhua/Meng Yongmin) (SP)ARGENTINA-BUENOS AIRES-3RD YOUTH OLYMPIC GAMES-OPENING CEREMONY PUBLICATIONxNOTxINxCHN

(181007) -- BUENOS AIRES, Oct. 7, 2018 (Xinhua) -- Actors perform during the opening ceremony of the 3rd Summer Youth Olympic Games Olympische Spiele Olympia OS (YOG) in Buenos Aires, Argentina, on Oct. 6, 2018. (Xinhua/He Changshan) (SP)ARGENTINA-BUENOS AIRES-3RD YOUTH OLYMPIC GAMES-OPENING CEREMONY PUBLICATIONxNOTxINxCHN

(181007) -- BUENOS AIRES, Oct. 7, 2018 (Xinhua) -- Performers take part in the opening ceremony of the 3rd Summer Youth Olympic Games Olympische Spiele Olympia OS (YOG) in Buenos Aires, Argentina, on Oct. 6, 2018. (Xinhua/Li Jundong) (SP)ARGENTINA-BUENOS AIRES-3RD YOUTH OLYMPIC GAMES-OPENING CEREMONY PUBLICATIONxNOTxINxCHN

(181007) -- BUENOS AIRES, Oct. 7, 2018 (Xinhua) -- Actors perform during the opening ceremony of the 3rd Summer Youth Olympic Games Olympische Spiele Olympia OS (YOG) in Buenos Aires, Argentina, on Oct. 6, 2018. (Xinhua/He Changshan) (SP)ARGENTINA-BUENOS AIRES-3RD YOUTH OLYMPIC GAMES-OPENING CEREMONY PUBLICATIONxNOTxINxCHN

(181007) -- BUENOS AIRES, Oct. 7, 2018 (Xinhua) -- Wang Yunzhang, flag bearer of Chinese delegation marches on the stage during the opening ceremony of the 3rd Summer Youth Olympic Games Olympische Spiele Olympia OS (YOG) in Buenos Aires, Argentina, on Oct. 6, 2018. (Xinhua/He Changshan) (SP)ARGENTINA-BUENOS AIRES-3RD YOUTH OLYMPIC GAMES-OPENING CEREMONY PUBLICATIONxNOTxINxCHN

(181007) -- BUENOS AIRES, Oct. 7, 2018 (Xinhua) -- Actors perform during the opening ceremony of the 3rd Summer Youth Olympic Games Olympische Spiele Olympia OS (YOG) in Buenos Aires, Argentina, on Oct. 6, 2018. (Xinhua/He Changshan) (SP)ARGENTINA-BUENOS AIRES-3RD YOUTH OLYMPIC GAMES-OPENING CEREMONY PUBLICATIONxNOTxINxCHN

(181007) -- BUENOS AIRES, Oct. 7, 2018 (Xinhua) -- Torch bearers take the torch to the cauldron during the opening ceremony of the 3rd Summer Youth Olympic Games Olympische Spiele Olympia OS (YOG) in Buenos Aires, Argentina, on Oct. 6, 2018. (Xinhua/Li Jundong) (SP)ARGENTINA-BUENOS AIRES-3RD YOUTH OLYMPIC GAMES-OPENING CEREMONY PUBLICATIONxNOTxINxCHN

(181007) -- BUENOS AIRES, Oct. 7, 2018 (Xinhua) -- Artists perform during the opening ceremony of the 3rd Summer Youth Olympic Games Olympische Spiele Olympia OS (YOG) in Buenos Aires, Argentina, on Oct. 6, 2018. (Xinhua/Li Jundong) (SP)ARGENTINA-BUENOS AIRES-3RD YOUTH OLYMPIC GAMES-OPENING CEREMONY PUBLICATIONxNOTxINxCHN

HANDOUT - 06 October 2018, Argentina, Buenos Aires: IOC President Thomas Bach (l) speaks during the opening ceremony of the Buenos Aires Youth Olympic Games. Photo: Agustin Marcarian/Buenos Aires 2018/IOC/dpa - ACHTUNG: Nur zur redaktionellen Verwendung und nur mit vollstдndiger Nennung des vorstehenden Credits

HANDOUT - 06 October 2018, Argentina, Buenos Aires: The Olympic flame burns during the opening ceremony of the Buenos Aires Youth Olympic Games. Photo: Agustin Marcarian/Buenos Aires 2018/IOC/dpa - ACHTUNG: Nur zur redaktionellen Verwendung und nur mit vollstдndiger Nennung des vorstehenden Credits

HANDOUT - 06 October 2018, Argentina, Buenos Aires: The Olympic flame (M) burns during the opening ceremony of the Buenos Aires Youth Olympic Games. Photo: Agustin Marcarian/Buenos Aires 2018/IOC/dpa - ACHTUNG: Nur zur redaktionellen Verwendung und nur mit vollstдndiger Nennung des vorstehenden Credits

06 October 2018, Argentina, Buenos Aires: Spectators watch the opening ceremony of the Buenos Aires Youth Olympic Games... Photo: Nicolas Villalobos/dpa

06 October 2018, Argentina, Buenos Aires: Spectators watch the opening ceremony of the Buenos Aires Youth Olympic Games... Photo: Nicolas Villalobos/dpa

06 October 2018, Argentina, Buenos Aires: Spectators watch the opening ceremony of the Buenos Aires Youth Olympic Games... Photo: Nicolas Villalobos/dpa

06 October 2018, Argentina, Buenos Aires: Spectators watch the opening ceremony of the Buenos Aires Youth Olympic Games... Photo: Nicolas Villalobos/dpa

06 October 2018, Argentina, Buenos Aires: Spectators watch the opening ceremony of the Buenos Aires Youth Olympic Games... Photo: Nicolas Villalobos/dpa

06 October 2018, Argentina, Buenos Aires: Spectators watch the opening ceremony of the Buenos Aires Youth Olympic Games... Photo: Nicolas Villalobos/dpa

06 October 2018, Argentina, Buenos Aires: Spectators watch the opening ceremony of the Buenos Aires Youth Olympic Games... Photo: Nicolas Villalobos/dpa

06 October 2018, Argentina, Buenos Aires: Spectators watch the opening ceremony of the Buenos Aires Youth Olympic Games... Photo: Nicolas Villalobos/dpa

06 October 2018, Argentina, Buenos Aires: Spectators watch the opening ceremony of the Buenos Aires Youth Olympic Games... Photo: Nicolas Villalobos/dpa

06 October 2018, Argentina, Buenos Aires: Spectators watch the opening ceremony of the Buenos Aires Youth Olympic Games... Photo: Nicolas Villalobos/dpa

06 October 2018, Argentina, Buenos Aires: Spectators watch the opening ceremony of the Buenos Aires Youth Olympic Games... Photo: Nicolas Villalobos/dpa

06 October 2018, Argentina, Buenos Aires: Spectators watch the opening ceremony of the Buenos Aires Youth Olympic Games... Photo: Nicolas Villalobos/dpa

06 October 2018, Argentina, Buenos Aires: Artists on BMX bikes are on the obelisk during the opening ceremony of the Buenos Aires Youth Olympic Games. Photo: Nicolas Villalobos/dpa

06 October 2018, Argentina, Buenos Aires: An artist during the opening ceremony of the Buenos Aires Youth Olympic Games. Photo: Nicolas Villalobos/dpa

06 October 2018, Argentina, Buenos Aires: An artist during the opening ceremony of the Buenos Aires Youth Olympic Games. Photo: Nicolas Villalobos/dpa

06 October 2018, Argentina, Buenos Aires: Spectators film the opening ceremony of the Buenos Aires Youth Olympic Games. Photo: Nicolas Villalobos/dpa

06 October 2018, Argentina, Buenos Aires: The Argentine national flag will be held by an artist on the obelisk of Buenos Aires at the opening ceremony of the Youth Olympic Games in Buenos Aires. Photo: Nicolas Villalobos/dpa

06 October 2018, Argentina, Buenos Aires: The Argentine national flag will be held by an artist on the obelisk of Buenos Aires at the opening ceremony of the Youth Olympic Games in Buenos Aires. Photo: Nicolas Villalobos/dpa

HANDOUT - 06 October 2018, Argentina, Buenos Aires: At the beginning of the opening ceremony of the Youth Olympic Games in Buenos Aires, a fireworks display will take place on Avenida 9 de Julio. Photo: Pablo Elias/Buenos Aires 2018/IOC/dpa - ACHTUNG: Nur zur redaktionellen Verwendung und nur mit vollstдndiger Nennung des vorstehenden Credits

06 October 2018, Argentina, Buenos Aires: Spectators watch the opening ceremony of the Buenos Aires Youth Olympic Games... Photo: Nicolas Villalobos/dpa

06 October 2018, Argentina, Buenos Aires: Spectators watch the opening ceremony of the Buenos Aires Youth Olympic Games... Photo: Nicolas Villalobos/dpa

06 October 2018, Argentina, Buenos Aires: Spectators watch the opening ceremony of the Buenos Aires Youth Olympic Games. Photo: Nicolas Villalobos/dpa

06 October 2018, Argentina, Buenos Aires: Spectators watch the opening ceremony of the Buenos Aires Youth Olympic Games... Photo: Nicolas Villalobos/dpa

06 October 2018, Argentina, Buenos Aires: The Argentine national flag will be held by an artist on the obelisk of Buenos Aires at the opening ceremony of the Youth Olympic Games in Buenos Aires. Photo: Nicolas Villalobos/dpa

06 October 2018, Argentina, Buenos Aires: The obelisk will be illuminated during the opening ceremony of the Buenos Aires Youth Olympic Games. Photo: Nicolas Villalobos/dpa

06 October 2018, Argentina, Buenos Aires: Spectators watch the opening ceremony of the Buenos Aires Youth Olympic Games... Photo: Nicolas Villalobos/dpa

HANDOUT - 06 October 2018, Argentina, Buenos Aires: A view over Avenida 9 de Julio during the opening ceremony of the Youth Olympic Games in Buenos Aires. Photo: Pablo Elias/Buenos Aires 2018/IOC/dpa - ACHTUNG: Nur zur redaktionellen Verwendung und nur mit vollstдndiger Nennung des vorstehenden Credits

HANDOUT - 06 October 2018, Argentina, Buenos Aires: The Olympic flag will be raised at the opening ceremony of the Youth Olympic Games in Buenos Aires. Photo: Pablo Elias/Buenos Aires 2018/IOC/dpa - ACHTUNG: Nur zur redaktionellen Verwendung und nur mit vollstдndiger Nennung des vorstehenden Credits

HANDOUT - 06 October 2018, Argentina, Buenos Aires: The Argentine national flag will be held by an artist on the obelisk of Buenos Aires at the opening ceremony of the Youth Olympic Games in Buenos Aires. Photo: -/Buenos Aires 2018/IOC/dpa - ACHTUNG: Nur zur redaktionellen Verwendung und nur mit vollstдndiger Nennung des vorstehenden Credits

(181007) -- BUENOS AIRES, Oct. 7, 2018 (Xinhua) -- Wang Yunzhang, flag bearer of Chinese delegation marches on the stage during the opening ceremony of the 3rd Summer Youth Olympic Games Olympische Spiele Olympia OS (YOG) in Buenos Aires, Argentina, on Oct. 6, 2018. (Xinhua/Meng Yongmin) (SP)ARGENTINA-BUENOS AIRES-3RD YOUTH OLYMPIC GAMES-OPENING CEREMONY PUBLICATIONxNOTxINxCHN

(181007) -- BUENOS AIRES, Oct. 7, 2018 (Xinhua) -- Artists perform during the opening ceremony of the 3rd Summer Youth Olympic Games Olympische Spiele Olympia OS (YOG) in Buenos Aires, Argentina, on Oct. 6, 2018. (Xinhua/Meng Yongmin) (SP)ARGENTINA-BUENOS AIRES-3RD YOUTH OLYMPIC GAMES-OPENING CEREMONY PUBLICATIONxNOTxINxCHN