Marvel's Shang-Chi movie has arrived! Simu Liu (Kim's Convenience) stars as the title character of the film, which is called Shang-Chi and the Legend of the Ten Rings. Destin Daniel Cretton directs Shang-Chi, while Crazy Rich Asians star Awkwafina also stars.But who is Shang-Chi, and why is he regarded as one of the greatest warriors in the Marvel Universe?