What do you think are the usual conflicts of a couple with different ethnicity?

there are many conflits of a couple with different ethnicity. = that a couple with different ethnicity might face.
for instance, they're gonna suffer from misunderstanding each other's languages.
in addition to that, there will be so many different things like a taste of food etc.

Yes, I do agree with your opinion. But I also believe that if they genuinely love each other, they can overcome all the differences that they have. Great job! Just remember that if your writing a sentence always that write the first letter of the first word in caps. ^-^