As others have said, this is common in Chinese writing. The unique thing about furigana is that it's typeset above/beside the kanji for the second meaning.
Perhaps the more interesting thing is how even songs will often use kanji for a concept but the sung lyrics are expressed in furigana, but IIRC Chinese culture has this too.
Perhaps the more interesting thing is how even songs will often use kanji for a concept but the sung lyrics are expressed in furigana, but IIRC Chinese culture has this too.