This video from the LA Times features the cast of the movie Crazy Rich Asians talking about their careers and routes into acting. Gemma Chan (Astrid) had this to say:
British stage and screen actress Gemma Chan was born in London to Chinese immigrant parents, raised “as a good Asian daughter” and studied law at Oxford. In secret, however, she auditioned for drama school, was accepted and went on to act in U.K. television in shows such as “Doctor Who,” “Sherlock” and “Humans.”
“[My] dad said to me, ‘It doesn’t matter how good you are or how talented you are — how many faces do you see on the screen that look like ours? You won’t get enough work,’ ” says Chan. “I said, ‘Dad, I just want to be part of a change.’ ”
At the link above, there are interviews with each of the actors. I’ve only watched the video (on Facebook, natch)…