A visitor watches a painting during the exhibition "Degas at the Opera" at the Orsay Museum in Paris, France, Sept. 24, 2019. The exhibition will last to Jan. 19, 2020. (Photos: Xinhua)

Photo taken on Sept. 24, 2019 shows an art piece on display during the exhibition "Degas at the Opera" at the Orsay Museum in Paris, France. The exhibition will last to Jan. 19, 2020.

Photo taken on Sept. 24, 2019 shows a painting on display during the exhibition "Degas at the Opera" at the Orsay Museum in Paris, France. The exhibition will last to Jan. 19, 2020.

People visit the exhibition "Degas at the Opera" at the Orsay Museum in Paris, France, Sept. 24, 2019. The exhibition will last to Jan. 19, 2020.

A woman visits the exhibition "Degas at the Opera" at the Orsay Museum in Paris, France, Sept. 24, 2019. The exhibition will last to Jan. 19, 2020.

A woman visits the exhibition "Degas at the Opera" at the Orsay Museum in Paris, France, Sept. 24, 2019. The exhibition will last to Jan. 19, 2020.

A visitor views a painting during the exhibition "Degas at the Opera" at the Orsay Museum in Paris, France, Sept. 24, 2019. The exhibition will last to Jan. 19, 2020.

People visit the exhibition "Degas at the Opera" at the Orsay Museum in Paris, France, Sept. 24, 2019. The exhibition will last to Jan. 19, 2020.

People visit the exhibition "Degas at the Opera" at the Orsay Museum in Paris, France, Sept. 24, 2019. The exhibition will last to Jan. 19, 2020.

People visit the exhibition "Degas at the Opera" at the Orsay Museum in Paris, France, Sept. 24, 2019. The exhibition will last to Jan. 19, 2020.

Visitors take photos of a painting during the exhibition "Degas at the Opera" at the Orsay Museum in Paris, France, Sept. 24, 2019. The exhibition will last to Jan. 19, 2020.

A visitor takes a photo of a painting during the exhibition "Degas at the Opera" at the Orsay Museum in Paris, France, Sept. 24, 2019. The exhibition will last to Jan. 19, 2020.