Performers showcase traditional performance at the Changdeokgung Palace during a moonlight tour in Seoul, South Korea, Oct. 29, 2020. Changdeokgung Palace was listed as a UNESCO world heritage site in 1997 and is regarded as a masterpiece of architecture as the buildings are in harmony with the natural settings. (Photo/China News Service)

Performers showcase traditional performance at the Changdeokgung Palace during a moonlight tour in Seoul, South Korea, Oct. 29, 2020. Changdeokgung Palace was listed as a UNESCO world heritage site in 1997 and is regarded as a masterpiece of architecture as the buildings are in harmony with the natural settings. (Photo/China News Service)

Performers showcase traditional performance at the Changdeokgung Palace during a moonlight tour in Seoul, South Korea, Oct. 29, 2020. Changdeokgung Palace was listed as a UNESCO world heritage site in 1997 and is regarded as a masterpiece of architecture as the buildings are in harmony with the natural settings. (Photo/China News Service)