Photo taken on Oct. 30, 2018 shows artworks exhibited during a preview of the exhibition "Gordon Parks: The New Tide, Early Work 1940-1950" at the National Gallery of Art in Washington D.C., the United States. The exhibition, bringing together 150 photographs and ephemera, focuses on the formative decade of the American photographer's 60-year career. It will be opened to the public from Nov. 4, 2018 to Feb. 18, 2019. (Xinhua/Liu Jie)