As I wrote previously, this Say it Right series is a good job by all! It clarified several things that I did not understand. Can you clear up my confusion about the 4th tone?
Fiona teaches it as an “soft” or “graceful” drop in tone, which I take to mean a slow drop, and that is what we hear in the lesson drill. But I still hear it often as a fast drop. Do we need to slow it down or risk being misunderstood?