Director Arnaud Desplechin (C) and cast members of "Oh Mercy! (Roubaix, une lumiere)" pose during a photocall at the 72nd Cannes Film Festival in Cannes, France, May 23, 2019. "Oh Mercy! (Roubaix, une Lumiere)" will compete for the Palme d'Or with 20 other films. (Xinhua/Gao Jing)