Visitors look at the tomb of Leonardo da Vinci at Saint-Hubert church of the Chateau d'Amboise in Amboise, France, May 1, 2019. Thursday marks the 500th anniversary of the death of Renaissance master Leonardo da Vinci. The famed painter, sculptor, writer, inventor, scientist and mathematician spent his last three years in Amboise as a guest of France's King Francis I. [Photo/Xinhua]

Visitors look at a sculpture of Leonardo da Vinci at the Chateau d'Amboise in Amboise, France, May 1, 2019. Thursday marks the 500th anniversary of the death of Renaissance master Leonardo da Vinci. The famed painter, sculptor, writer, inventor, scientist and mathematician spent his last three years in Amboise as a guest of France's King Francis I. [Photo/Xinhua]

Photo taken on May 1, 2019 shows the garden of Leonardo da Vinci at Chateau du Clos Luce in Amboise, France. Thursday marks the 500th anniversary of the death of Renaissance master Leonardo da Vinci. The famed painter, sculptor, writer, inventor, scientist and mathematician spent his last three years in Amboise as a guest of France's King Francis I. [Photo/Xinhua]

A girl visits the painting room of Leonardo da Vinci at Chateau du Clos Luce in Amboise, France, May 1, 2019. Thursday marks the 500th anniversary of the death of Renaissance master Leonardo da Vinci. The famed painter, sculptor, writer, inventor, scientist and mathematician spent his last three years in Amboise as a guest of France's King Francis I. [Photo/Xinhua]

Photo taken on May 1, 2019 shows the Chateau d'Amboise where the tomb of Leonardo da Vinci is settled in Amboise, France. Thursday marks the 500th anniversary of the death of Renaissance master Leonardo da Vinci. The famed painter, sculptor, writer, inventor, scientist and mathematician spent his last three years in Amboise as a guest of France's King Francis I. [Photo/Xinhua]

Photo taken on May 1, 2019 shows the bedroom of Leonardo da Vinci at Chateau du Clos Luce in Amboise, France. Thursday marks the 500th anniversary of the death of Renaissance master Leonardo da Vinci. The famed painter, sculptor, writer, inventor, scientist and mathematician spent his last three years in Amboise as a guest of France's King Francis I. [Photo/Xinhua]

A visitor is seen at a model-displaying hall of Leonardo da Vinci's inventions at Chateau du Clos Luce in Amboise, France, May 1, 2019. Thursday marks the 500th anniversary of the death of Renaissance master Leonardo da Vinci. The famed painter, sculptor, writer, inventor, scientist and mathematician spent his last three years in Amboise as a guest of France's King Francis I. [Photo/Xinhua]

People visit the painting room of Leonardo da Vinci at Chateau du Clos Luce in Amboise, France, May 1, 2019. Thursday marks the 500th anniversary of the death of Renaissance master Leonardo da Vinci. The famed painter, sculptor, writer, inventor, scientist and mathematician spent his last three years in Amboise as a guest of France's King Francis I. [Photo/Xinhua]

Photo taken on May 1, 2019 shows the room where Leonardo da Vinci painted at Chateau du Clos Luce in Amboise, France. Thursday marks the 500th anniversary of the death of Renaissance master Leonardo da Vinci. The famed painter, sculptor, writer, inventor, scientist and mathematician spent his last three years in Amboise as a guest of France's King Francis I. [Photo/Xinhua]

Photo taken on May 1, 2019 shows the scenery in Amboise, France. Thursday marks the 500th anniversary of the death of Renaissance master Leonardo da Vinci. The famed painter, sculptor, writer, inventor, scientist and mathematician spent his last three years in Amboise as a guest of France's King Francis I. [Photo/Xinhua]

People visit the Chateau d'Amboise in Amboise, France, May 1, 2019. Thursday marks the 500th anniversary of the death of Renaissance master Leonardo da Vinci. The famed painter, sculptor, writer, inventor, scientist and mathematician spent his last three years in Amboise as a guest of France's King Francis I. [Photo/Xinhua]

Photo taken on May 1, 2019 shows the Saint-Hubert church of the Chateau d'Amboise where the tomb of Leonardo da Vinci is settled in Amboise, France. Thursday marks the 500th anniversary of the death of Renaissance master Leonardo da Vinci. The famed painter, sculptor, writer, inventor, scientist and mathematician spent his last three years in Amboise as a guest of France's King Francis I. [Photo/Xinhua]