It's been an absolute unit of a weekend for Simu Liu, who was announced as the star of Marvel's forthcoming Shang-Chi and the Legend of the Ten Rings. Liu, who will play the titular martial arts master, was on hand during Marvel's San Diego Comic-Con 2019 presentation on Saturday, July 20, to share the exciting news with fans who've been eagerly waiting to know who will take over this monumental role. Liu will play the MCU's first Asian-American superhero and will be joined by Tony Leung as The Mandarin and Awkwafina in …