HONG KONG — An angry Chinese public is accusing Marvel Studios of “insulting China” after learning that its first Asian superhero on the big screen will be the son of Fu Manchu, the offensive fictional character who has become a shorthand for racial stereotyping. Chinese-American screenwriter Mr Dave Callaham, whose movie credits include 1984’s Wonder Woman and Spider-Man: Into the Spider-Verse 2, is working on a script for a film showcasing Shang-Chi, who first appeared in Marvel’s comics in the 1970s. According to Hollywood Reporter, Marvel is expecting Shang-Chi, also known as the Master of Kung Fu in the Marvel...