Chung Yoon-mo, 81, who has been fully vaccinated against the coronavirus disease (COVID-19), enjoys aquarobics at a pool in Seoul, South Korea, June 17, 2021. REUTERS/Kim Hong-Ji

A safety guard wearing a face mask keeps watch as elderly women, who have been fully vaccinated against the coronavirus disease (COVID-19), enjoy aquarobics at a pool in Seoul, South Korea, June 17, 2021. REUTERS/Kim Hong-Ji

Kan Kye-yeon, 85, who has been fully vaccinated against the coronavirus disease (COVID-19), wears a mask as she enjoys aquarobics at a pool in Seoul, South Korea, June 17, 2021. REUTERS/Kim Hong-Ji

Kan Kye-yeon, 85, who has been fully vaccinated against the coronavirus disease (COVID-19), wears a mask as she arrives for aquarobics at a pool in Seoul, South Korea, June 17, 2021. REUTERS/Kim Hong-Ji

Elderly women, who have been fully vaccinated against the coronavirus disease (COVID-19), enjoy aquarobics at a pool in Seoul, South Korea, June 17, 2021. REUTERS/Kim Hong-Ji

Elderly women, who have been fully vaccinated against the coronavirus disease (COVID-19), enjoy aquarobics at a pool in Seoul, South Korea, June 17, 2021. REUTERS/Kim Hong-Ji

Elderly women, who have been fully vaccinated against the coronavirus disease (COVID-19), enjoy aquarobics at a pool in Seoul, South Korea, June 17, 2021. REUTERS/Kim Hong-Ji

Residents walk in Seoul's Chinatown neighbourhood June 16, 2021. REUTERS/Kim Hong-Ji

Residents walk in Seoul's Chinatown neighbourhood, June 16, 2021. REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Lebanon - Goyang Stadium, Goyang, South Korea - June 13, 2021 South Korea's Son Heung-Min in action with Lebanon's Kassem El Zein REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Lebanon - Goyang Stadium, Goyang, South Korea - June 13, 2021 South Korea's Son Heung-Min reacts REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Lebanon - Goyang Stadium, Goyang, South Korea - June 13, 2021 South Korea's Nam Tae-Hee in action with Lebanon's Maher Sabra REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Lebanon - Goyang Stadium, Goyang, South Korea - June 13, 2021 South Korea's Son Heung-Min celebrates scoring their second goal REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Lebanon - Goyang Stadium, Goyang, South Korea - June 13, 2021 South Korea's Son Heung-Min looks into a TV camera as he celebrates scoring their second goal REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Lebanon - Goyang Stadium, Goyang, South Korea - June 13, 2021 South Korea's Son Heung-Min scores their second goal from the penalty spot REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Lebanon - Goyang Stadium, Goyang, South Korea - June 13, 2021 South Korea's Son Heung-Min celebrates scoring their second goal REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Lebanon - Goyang Stadium, Goyang, South Korea - June 13, 2021 South Korea's Son Heung-Min celebrates scoring their second goal REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Lebanon - Goyang Stadium, Goyang, South Korea - June 13, 2021 South Korea's Son Heung-Min scores their second goal from the penalty spot REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Lebanon - Goyang Stadium, Goyang, South Korea - June 13, 2021 South Korea's Son Heung-Min reacts REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Lebanon - Goyang Stadium, Goyang, South Korea - June 13, 2021 South Korea's Park Ji-Su reacts after missing a chance to score REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Lebanon - Goyang Stadium, Goyang, South Korea - June 13, 2021 South Korea's Song Min-Kyu celebrates scoring their first goal with teammates REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Lebanon - Goyang Stadium, Goyang, South Korea - June 13, 2021 South Korea's Song Min-Kyu celebrates scoring their first goal with teammates REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Lebanon - Goyang Stadium, Goyang, South Korea - June 13, 2021 Lebanon's Mehdi Khalil in action REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Lebanon - Goyang Stadium, Goyang, South Korea - June 13, 2021 South Korea's Song Min-Kyu in action with Lebanon's Soony Saad REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Lebanon - Goyang Stadium, Goyang, South Korea - June 13, 2021 South Korea's Kim Moon-Hwan in action with Lebanon's Mohamad Haidar REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Lebanon - Goyang Stadium, Goyang, South Korea - June 13, 2021 South Korea's Song Min-Kyu in action with Lebanon's Soony Saad REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Lebanon - Goyang Stadium, Goyang, South Korea - June 13, 2021 Lebanon's Hilal El-Helwe lies on the pitch as South Korea's Hong Chul and Lee Jae-Sung react REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Lebanon - Goyang Stadium, Goyang, South Korea - June 13, 2021 South Korea's Song Min-Kyu and Hong Chul in action with Lebanon's Hilal El-Helwe REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Lebanon - Goyang Stadium, Goyang, South Korea - June 13, 2021 South Korea's Lee Jae-sung in action with Lebanon's Mohamad Haidar REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Lebanon - Goyang Stadium, Goyang, South Korea - June 13, 2021 Fans are seen wearing protective face masks in the stands before the match REUTERS/Kim Hong-Ji

Lee Jun-Seok, new chairman of the main opposition People Power Party (PPP) waves the party flag after elected for leadership race at party headquarters in Seoul, South Korea, June 11, 2021. Kim Min-Hee/Pool via REUTERS

Lee Jun-Seok, new chairman of the main opposition People Power Party (PPP) speaks after elected for leadership race at party headquarters in Seoul, South Korea, June 11, 2021. Kim Min-Hee/Pool via REUTERS

Lee Jun-Seok, new chairman of the main opposition People Power Party (PPP) speaks after elected for leadership race at party headquarters in Seoul, South Korea, June 11, 2021. Kim Min-Hee/Pool via REUTERS

Lee Jun-Seok, new chairman of the main opposition People Power Party (PPP) speaks after elected for leadership race at party headquarters in Seoul, South Korea, June 11, 2021. Kim Min-Hee/Pool via REUTERS

Lee Jun-Seok (C), new chairman of the main opposition People Power Party (PPP) holds up a bunch of flowers as he is elected with new executive Committee members at party headquarters in Seoul, South Korea, June 11, 2021. Kim Min-Hee/Pool via REUTERS

Lee Jun-Seok (C), new chairman of the main opposition People Power Party (PPP) holds up a bunch of flowers as he is elected with new executive Committee members at party headquarters in Seoul, South Korea, June 11, 2021. Kim Min-Hee/Pool via REUTERS

Soccer Football - Asia Qualifiers - Second Round - Group H - Republic of Korea v Sri Lanka - Goyang Stadium, Goyang, South Korea - June 9, 2021 Republic of Korea's Sang-Bin Jeong in action with Sri Lanka's Chamod Dilshan REUTERS/Kim Hong-Ji

Soccer Football - Asia Qualifiers - Second Round - Group H - Republic of Korea v Sri Lanka - Goyang Stadium, Goyang, South Korea - June 9, 2021 Republic of Korea's Ki-Je Lee in action with Sri Lanka's Chalana Chameera REUTERS/Kim Hong-Ji

Soccer Football - Asia Qualifiers - Second Round - Group H - Republic of Korea v Sri Lanka - Goyang Stadium, Goyang, South Korea - June 9, 2021 Republic of Korea's Shin-Wook Kim celebrates scoring their third goal REUTERS/Kim Hong-Ji

Soccer Football - Asia Qualifiers - Second Round - Group H - Republic of Korea v Sri Lanka - Goyang Stadium, Goyang, South Korea - June 9, 2021 Republic of Korea's Shin-Wook Kim scores their third goal from the penalty spot REUTERS/Kim Hong-Ji

Soccer Football - Asia Qualifiers - Second Round - Group H - Republic of Korea v Sri Lanka - Goyang Stadium, Goyang, South Korea - June 9, 2021 Sri Lanka's Chamod Dilshan in action with Republic of Korea's Tae-Hee Nam REUTERS/Kim Hong-Ji

Soccer Football - Asia Qualifiers - Second Round - Group H - Republic of Korea v Sri Lanka - Goyang Stadium, Goyang, South Korea - June 9, 2021 Republic of Korea's Dong-Gyeong Lee celebrates scoring their second goal with Tae-Hee Nam REUTERS/Kim Hong-Ji

Soccer Football - Asia Qualifiers - Second Round - Group H - Republic of Korea v Sri Lanka - Goyang Stadium, Goyang, South Korea - June 9, 2021 Republic of Korea's Shin-Wook Kim scores their first goal REUTERS/Kim Hong-Ji

Soccer Football - Asia Qualifiers - Second Round - Group H - Republic of Korea v Sri Lanka - Goyang Stadium, Goyang, South Korea - June 9, 2021 Sri Lanka's Ahmed Waseem Razeek looks dejected after Republic of Korea's Shin-Wook Kim scores their first goal REUTERS/Kim Hong-Ji

Soccer Football - Asia Qualifiers - Second Round - Group H - Republic of Korea v Sri Lanka - Goyang Stadium, Goyang, South Korea - June 9, 2021 Republic of Korea's Min-Kyu Song in action REUTERS/Kim Hong-Ji

Mourners wearing masks to prevent contracting the coronavirus disease (COVID-19) pay a silent tribute for their family member who died for the country, on Korean Memorial Day at the National Cemetery in Seoul, South Korea, June 6, 2021. REUTERS/Kim Hong-Ji

Women wearing masks to prevent contracting the coronavirus disease (COVID-19) arrive to mourn for a family member who died for the country, on Korean Memorial Day at the National Cemetery in Seoul, South Korea, June 6, 2021. REUTERS/Kim Hong-Ji

A man wearing a mask to prevent contracting the coronavirus disease (COVID-19) makes a deep bow in front of a gravestone of a family member who died for the country, on Korean Memorial Day at the National Cemetery in Seoul, South Korea, June 6, 2021. REUTERS/Kim Hong-Ji

A man wearing a mask to prevent contracting the coronavirus disease (COVID-19) mourns for a family member who died for the country, on Korean Memorial Day at the National Cemetery in Seoul, South Korea, June 6, 2021. REUTERS/Kim Hong-Ji

A man sits next to a gravestone of a family member who died for the country, on Korean Memorial Day at the National Cemetery in Seoul, South Korea, June 6, 2021. REUTERS/Kim Hong-Ji TPX IMAGES OF THE DAY REFILE - CORRECTING INFORMATION

South Korean veterans wearing masks to prevent contracting the coronavirus disease (COVID-19) salute at a gravestone of a fellow soldier who died for the country, on Korean Memorial Day at the National Cemetery in Seoul, South Korea, June 6, 2021. REUTERS/Kim Hong-Ji

A woman wearing a mask to prevent contracting the coronavirus disease (COVID-19) arrives to mourn for a family member who died for the country, on Korean Memorial Day at the National Cemetery in Seoul, South Korea, June 6, 2021. REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Turkmenistan - Goyang Stadium, Goyang, South Korea - June 5, 2021 South Korea's Heung-Min Son shakes hands with Turkmenistan's Tursunov Furkat after the match REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Turkmenistan - Goyang Stadium, Goyang, South Korea - June 5, 2021 Turkmenistan's Tursunov Furkat in action with South Korea's Hee-Chan Hwang REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Turkmenistan - Goyang Stadium, Goyang, South Korea - June 5, 2021 Turkmenistan's Tursunov Furkat in action with South Korea's Moon-Hwan Kim REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Turkmenistan - Goyang Stadium, Goyang, South Korea - June 5, 2021 Turkmenistan's Annaguliyev Guychmyrat in action with South Korea's Chul Hong REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Turkmenistan - Goyang Stadium, Goyang, South Korea - June 5, 2021 South Korea's Ui-jo Hwang in action with Turkmenistan's Zafar Babajanov REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Turkmenistan - Goyang Stadium, Goyang, South Korea - June 5, 2021 South Korea's Heung-Min Son shoots at goal REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Turkmenistan - Goyang Stadium, Goyang, South Korea - June 5, 2021 South Korea's Young-Gwon Kim celebrates scoring their fourth goal with teammates REUTERS/Kim Hong-Ji

Soccer Football - World Cup - Asia Qualifiers - Second Round - Group H - South Korea v Turkmenistan - Goyang Stadium, Goyang, South Korea - June 5, 2021 South Korea's Young-Gwon Kim celebrates scoring their fourth goal with teammates Jae-Sung Lee and Tae-Hee Nam REUTERS/Kim Hong-Ji