Based on his colorful, lyrical, childlike landscapes of wildflowers, forests and Korea’s Mount Seorak, one might think South Korean artist Kim Chong Hak’s is far younger than his 88 years.

"It happened suddenly, so no special action was taken," said a spokesperson from the Leeum Museum of Art Anna Lazarus Caplan is a writer-reporter for PEOPLE. She has been working at PEOPLE since 2022.