I think it is difficult to read the kanji of Japanese idioms and compound words. Even if you look it up in a dictionary, the reading of that kanji may not be listed. For example, why is ''船便'' pronounced ''Funabin'' instead of ''Funebin''?
I'm sure you've all wondered this as well.
I hope this video can answer some of your questions.

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#Onigirikun's Japanese
#Japanese pronunciation
#Howtoreadkanji