变革不常 (變革不常) biàngé bù cháng

biàngé bù cháng phrase changed frequently
Domain: Literary Chinese 文言文
Notes: TM: 變革 change + 不 not + 常 constant; from 《宋史·卷一百八十一》 History of Song, volume 181 (Chien 2004, p. 94)

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Truncated for common words