開かい催さい中ちゅうMeaningsNoun1. in session; in progress; under way; openKanji used開open催to host中inComposed of開かい催さいholding (a conference, exhibition, etc.); opening; hosting (e.g. the Olympics)Noun中ちゅうmedium (size); average (grade, level, etc.); middle; in; within; out of (e.g. ten people); among; during; while; in (the course of); …NounExamples1その展てん覧らん会かいは今いま開かい催さい中ちゅうです。The exhibition is now open.