Daytime; during the day (the hours when the sun is up).
日中は気温が上がるので水分補給を忘れないでください。
Temperatures rise during the day, so don't forget to hydrate.
この店は日中は混雑するが、夜は空いている。
This shop is crowded during the daytime but empty at night.
日中に外出する予定があるなら、帽子を持っていった方がいい。
If you plan to go out during the day, it's better to bring a hat.
Refers to Japan and China collectively; used in contexts like 'Sino-Japanese' or 'Japan–China' relations.
日中首脳会談で両国の貿易問題が話し合われた。
Trade issues between the two countries were discussed at the Japan–China leaders' meeting.
日中関係の改善を目指す新たな枠組みが提案された。
A new framework aimed at improving Japan–China relations was proposed.
この条約は日中双方に影響を与えるだろう。
This treaty will likely affect both Japan and China.