currently; during; throughout
Indicates that an action or state is currently in progress or ongoing throughout a period.
The suffix 中 has two readings with different meanings. When read as 'chuu', it means 'in the middle of' or 'during', and it attaches to the stem of a verb (the form before ます) or to a noun that represents an activity. For example, 仕事中 means 'in the middle of work', and 会議中 means 'during the meeting'. This is common in everyday speech to describe what someone is currently doing, often as a status update or a polite way to say someone is busy. When read as 'juu', it means 'throughout' or 'all over', and it attaches to nouns that represent a period or a place, like 一日中 (all day) or 世界中 (all over the world). This reading emphasizes the entirety of the time or space. You can remember the difference: 'chuu' is like being in the middle of something, while 'juu' covers the whole thing.