Vincent Delieuvin, curator of 16th-century Italian art at the Louvre Museum, speaks to media in front of the painting "La Belle Ferronniere" by Leonardo Da Vinci at the Louvre Museum in Paris, France, Oct. 22, 2019. An exceptional exhibition on Leonardo Da Vinci will kick off on Thursday at the Louvre Museum to commemorate the fifth centenary of the artist's death. (Xinhua/Gao Jing)