Refers to all times (past and present) and all places (China and foreign countries); throughout history and everywhere.
指从古代到现代，从国内到国外。泛指时间久远，空间广阔。
茅盾《子夜》九翻遍了古今中外的历史，没有一个国家曾经用这种所谓示威运动而变成了既富且强。”
This scientific principle holds true古今中外.
Learn the next connected idiom: 古今中外 (gǔ jīn zhōng wài) → 外强中干 (wài qiáng zhōng gān)
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