Reminiscent of my Chinese teacher - her motto is, ‘Chinese is very easy’. I’d ask, what tone is that? And she’d say, the one you hear. Lol, so annoying. Problem is, some actually don't hear it. There is a mechanism in the brain that can reduce language-input to the nearest sounds in your own language (needed to understand accents) and my language has no tones. I hear the tones now, but it took me years.
This too, who's got the time!