Warner Bros. and DC Studios are set to test the waters of the Chinese box office with the release of 'Aquaman and the Lost Kingdom' on December 20, two days ahead of its North American debut. The first 'Aquaman' was a colossal success in China, earning $291.8 million in 2018 and standing as the highest-grossing DC movie globally. However, recent superhero releases, notably from Marvel and DC, have seen dwindling numbers in the Chinese market.