The cast and crew of "Operation Hadal" on stage at a promotional event at the China National Film Museum in Beijing, Jan. 22, 2025. [Photo courtesy of China Movie Channel]

"Operation Hadal," a sequel to the military blockbuster "Operation Red Sea," will dive into the depths of the ocean, offering a wider battlefield and more intricate combat scenarios. Yu Dong, chairman of Bona Film Group, described the film as China's first nuclear submarine movie and a significant gift to the nation and its navy. Meanwhile, director Dante Lam assured viewers that the film will be worth the seven-year wait and the anticipation it has generated.