After nearly 50 years, Steve Englehart '69 will see one of his original Marvel characters make its big-screen debut this fall. Englehart’s creation, martial arts master Shang-Chi, is the lead character of “Shang-Chi and the Legend of the Ten Rings,” starring Simu Liu, perhaps best known for his work in the Canadian comedy “Kim’s Convenience.” The film debuted Aug. 15 in Los Angeles and will be released nationwide on Sept. 3. Although Englehart was not involved in the movie production, he sees core elements of the backstory he created in the trailer for the upcoming film. In Englehart’s original story…