People gather in front of a giant figure of Optimus Prime from the movie "Transformers 4: Age of Extinction," displayed for its world premiere in Hong Kong Thursday, June 19, 2014. The latest installment in the blockbuster series of "Transformers" films is making its world premier not in the usual entertainment hubs of Los Angeles or New York but in the wealthy Chinese metropolis of Hong Kong, the latest sign of Hollywood's increasing focus on China's booming film market. (AP Photo/Kin Cheung) ( Hong Kong Film Transformers )