Zhang Qun or Chang Ch'ün (張群; pinyin: Zhāng Qún; also known as Zhang Yuejun 張岳軍; May 9, 1889 – December 14, 1990) was premier of the Republic of China and prominent member of the Kuomintang. He later became secretary general to the President of the Republic from 1954 to 1972 and senior advisor to Presidents Chiang Kai-shek, Yen Chia-kan, Chiang Ching-kuo and Lee Teng-hui.
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