Warner Bros. With its $55 million opening weekend take in China, Dwayne Johnson's latest movie, "Rampage," proved that the star is one of the few actors who can bring in major coin across the world. But his dominance in China, the second-largest movie market in the world, has been years in the making. For many studio heads these days, glancing at how their latest movie did in China is in some ways more important than how it did in North America.