Actor Leonardo DiCaprio (L) and director Quentin Tarantino pose during a photocall for "Once Upon a Time in Hollywood" during the 72nd Cannes Film Festival in Cannes, France, May 22, 2019. "Once Upon a Time in Hollywood" will compete for the Palme d'Or with 20 other films. (Photos: Xinhua)

Director Quentin Tarantino and actress Margot Robbie pose during a photocall for "Once Upon a Time in Hollywood" during the 72nd Cannes Film Festival in Cannes, France, May 22, 2019. "Once Upon a Time in Hollywood" will compete for the Palme d'Or with 20 other films.

Actor Leonardo DiCaprio (L) and director Quentin Tarantino pose during a photocall for "Once Upon a Time in Hollywood" during the 72nd Cannes Film Festival in Cannes, France, May 22, 2019. "Once Upon a Time in Hollywood" will compete for the Palme d'Or with 20 other films.

Actor Leonardo DiCaprio poses during a photocall for "Once Upon a Time in Hollywood" during the 72nd Cannes Film Festival in Cannes, France, May 22, 2019. "Once Upon a Time in Hollywood" will compete for the Palme d'Or with 20 other films.

Actors Brad Pitt (L) and Leonardo DiCaprio pose during a photocall for "Once Upon a Time in Hollywood" during the 72nd Cannes Film Festival in Cannes, France, May 22, 2019. "Once Upon a Time in Hollywood" will compete for the Palme d'Or with 20 other films.

Actors Brad Pitt (L) and Leonardo DiCaprio pose during a photocall for "Once Upon a Time in Hollywood" during the 72nd Cannes Film Festival in Cannes, France, May 22, 2019. "Once Upon a Time in Hollywood" will compete for the Palme d'Or with 20 other films.

Actors Brad Pitt (L) and Leonardo DiCaprio pose during a photocall for "Once Upon a Time in Hollywood" during the 72nd Cannes Film Festival in Cannes, France, May 22, 2019. "Once Upon a Time in Hollywood" will compete for the Palme d'Or with 20 other films.

Actor Leonardo DiCaprio poses during a photocall for "Once Upon a Time in Hollywood" during the 72nd Cannes Film Festival in Cannes, France, May 22, 2019. "Once Upon a Time in Hollywood" will compete for the Palme d'Or with 20 other films.

Actor Leonardo DiCaprio and actress Margot Robbie pose during a photocall for "Once Upon a Time in Hollywood" during the 72nd Cannes Film Festival in Cannes, France, May 22, 2019. "Once Upon a Time in Hollywood" will compete for the Palme d'Or with 20 other films.

Director Quentin Tarantino poses during a photocall for "Once Upon a Time in Hollywood" during the 72nd Cannes Film Festival in Cannes, France, May 22, 2019. "Once Upon a Time in Hollywood" will compete for the Palme d'Or with 20 other films.

Actor Leonardo DiCaprio (L) and director Quentin Tarantino pose during a photocall for "Once Upon a Time in Hollywood" during the 72nd Cannes Film Festival in Cannes, France, May 22, 2019. "Once Upon a Time in Hollywood" will compete for the Palme d'Or with 20 other films.

Director Quentin Tarantino poses during a photocall for "Once Upon a Time in Hollywood" during the 72nd Cannes Film Festival in Cannes, France, May 22, 2019. "Once Upon a Time in Hollywood" will compete for the Palme d'Or with 20 other films.

Actor Leonardo DiCaprio poses during a photocall for "Once Upon a Time in Hollywood" during the 72nd Cannes Film Festival in Cannes, France, May 22, 2019. "Once Upon a Time in Hollywood" will compete for the Palme d'Or with 20 other films.

Actress Margot Robbie poses during a photocall for "Once Upon a Time in Hollywood" during the 72nd Cannes Film Festival in Cannes, France, May 22, 2019. "Once Upon a Time in Hollywood" will compete for the Palme d'Or with 20 other films.

Actor Leonardo DiCaprio (L) and director Quentin Tarantino pose during a photocall for "Once Upon a Time in Hollywood" during the 72nd Cannes Film Festival in Cannes, France, May 22, 2019. "Once Upon a Time in Hollywood" will compete for the Palme d'Or with 20 other films.

Actor Leonardo DiCaprio (R), actress Margot Robbie (C) and actor Brad Pitt pose during a photocall for "Once Upon a Time in Hollywood" during the 72nd Cannes Film Festival in Cannes, France, May 22, 2019. "Once Upon a Time in Hollywood" will compete for the Palme d'Or with 20 other films.

Actress Margot Robbie poses during a photocall for "Once Upon a Time in Hollywood" during the 72nd Cannes Film Festival in Cannes, France, May 22, 2019. "Once Upon a Time in Hollywood" will compete for the Palme d'Or with 20 other films.

Actor Leonardo DiCaprio and actress Margot Robbie pose during a photocall for "Once Upon a Time in Hollywood" during the 72nd Cannes Film Festival in Cannes, France, May 22, 2019. "Once Upon a Time in Hollywood" will compete for the Palme d'Or with 20 other films.

Actor Leonardo DiCaprio and actress Margot Robbie pose during a photocall for "Once Upon a Time in Hollywood" during the 72nd Cannes Film Festival in Cannes, France, May 22, 2019. "Once Upon a Time in Hollywood" will compete for the Palme d'Or with 20 other films.