Dinosaur mockups are installed in Danghangpo, Goseong, some 466km southeast of Seoul, South Korea, 06 September 2021, 25 days ahead of the Gyeongnam Goseong Dinosaur World Expo 2021 set for 01 October until 07 November. Goseong is one of the world's three largest fossilized dinosaur footprint sites, along with Colorado in the United States and the west coast of Argentina. (Photo by Yonhap/EPA/EFE)

In this Thursday, June 14, 2018, file photo, students wear virtual reality goggles during a science class at Pyongyang Teachers' University, a teacher training college, in Pyongyang, North Korea. (Photo by Dita Alangkara/AP Photo)

A woman walks on the stairs decorated with an image of two hands shaking to form the shape of the Korean Peninsula to support the upcoming inter- Korean summit, in downtown Seoul on September 17, 2018. South Korean President Moon Jae- in will fly to the North Korean capital on September 18, for his third summit with the North' s leader Kim Jong Un as a rapid diplomatic thaw takes hold on the peninsula despite stalled progress in denuclearisation talks between Pyongyang and Washington. (Photo by Jung Yeon-je/AFP Photo)

A couple wearing face masks rides a bicycle at a park in Seoul, South Korea, Saturday, March 7, 2020. The number of infections of the COVID-19 disease spread around the globe. (Photo by Ahn Young-joon/AP Photo)

People visit the Mansu Hill to lay flowers to the bronze statues of late leaders Kim Il Sung and Kim Jong Il on the occasion of the 108th birth anniversary of Kim Il Sung in Pyongyang, North Korea Wednesday, April 15, 2020. (Photo by Alamy Live News)

North Korean girls in similar bathing suits stand under a shower at the Songdowon International Children's Camp, Tuesday, July 29, 2014, in Wonsan, North Korea. The camp, which has been operating for nearly 30 years, was originally intended mainly to deepen relations with friendly countries in the Communist or non-aligned world. But officials say they are willing to accept youth from anywhere – even the United States. (Photo by Wong Maye-E/AP Photo)

A leaflet denouncing South Korean President Park Geun-hye lies on the ground after it was torn at a protest calling Park to step down, in Seoul, South Korea, November 19, 2016. (Photo by Kim Hong-Ji/Reuters)

Noriko Takatory of Japan shares a moment with her groom Moon Byung-nam of South Korea during an opening ceremony for upcoming mass wedding ceremony of the Unification Church at Cheongshim Peace World Centre in Gapyeong, South Korea, February 19, 2016. (Photo by Kim Hong-Ji/Reuters)