People view works of U.S. artist David Hammons at Hauser & Wirth in Los Angeles, U.S.

A visitor views an installation of U.S. artist David Hammons at Hauser & Wirth in Los Angeles, the United States, on June 28, 2019. Held from May 18 to August 11, the exhibition is dedicated to U.S. jazz saxophonist and composer Ornette Coleman. (Xinhua/Li Ying)