The most devastating part of “Mulan,” Disney’s much-anticipated live-action remake of the 1998 animated film, isn’t the story. It’s the credits. The film retells the ancient Chinese tale of Hua Mulan, a filial daughter who dresses as a man to join the army, honor her father and save the emperor. While the film engenders pride for China, it does so with a subtle touch: Besides a few mentions of defending the Silk Road, a favorite trading route of Chinese Communist Party leader Xi Jinping, little links it to the modern-day country. The New York Times called it “lightly funny and a little sad, filled with ravishing landscapes.”