Octonauts: The Caves of Sac Actun, the world's famous animation film, opened its first round of surprise screenings during the Children's Day and Dragon Boat Festival, and led in total box office.

During the surprise screenings, the movie recorded box office of 16.34 million yuan, as well as positive comments from parents and children. The film was officially released on July 9, and the mysterious underwater cave was unveiled soon after.