Visitors tour the Hilbert Museum of California Art at Chapman University in Orange County, the United States, on Feb. 19, 2020. The Hilbert Museum of California Art opened to public in 2016. The Hilbert Collection, which includes oils, watercolors and drawings of urban scenes, coastal views, farms and landscapes of everyday life, is a repository of images of the 20th century by California artists. (Xinhua/Li Ying)