First things first the way you pronounce Choronghi IS HERE.
Also, I also inputted jjoronghi because it’s fun & it sounds cute/annoying.
NOTE: It is a a program so it does sound sorta robotic/etc so please use your imagination to fill that GAP up.
MUST READ/REFERENCE FOR PEOPLE THAT KNOW Japanese and ARE learning korean. It’s most definitely applicable the other way around. If you don’t look at this you really are trying to learn Korean the hard way. BTW I tried googling for mandarin and found little things here and there but nothing like this. perhaps no one bothered to write down the patterns or maybe there just isn’t that much to really point out.
other links about hanja