The gates of China’s newest theme park were flung open Saturday — the first salvo in billionaire property magnet Wang Jianlin’s campaign to unseat Disney as the undisputed king of the world’s entertainment industry. The Wanda Cultural Tourism City, built to a tune of $3.3 billion by Wang’s Dalian Wanda Group, is the first of the firm’s 15 planned theme park and entertainment projects in China — plus five more internationally — slated to open by 2020. Spanning almost 500 acres in Nanchang, a city of 5 million in China’s southeastern Jiangxi province, the project features a theme park — boasting China’s highest, longest and fastest roller coaster — a 14-screen movie park, aquarium, five hotels and a bevy of retail outlets, according to Wanda. “Tourists can fight 3D monsters in an interactive cinema complex and fly through China’s Jiangxi Province in a flight simulator,” said the firm in a promotional statement. The launch has been hyped by Wang’s recent robust criticism of Disney, whose new Shanghai theme park is due to open next month.