prose in the classical literary style : > to be flexible
Contents
Not the main Guchang
  Explanation: Guchang: the old routine and habits. Confined in the old _set_.
  Usage: Verb-object type; for the predicate; described nonconformist
  Source: Song Zhuang Zhou Warring States, "Zhuang Tian-yun": "The sound can be short to long, can be just soft to the change of homogeneity, not the main Guchang."
  Examples: While the plates of the gas, flames of light, visit the Li River frustrated, ~. (Qing Mo Youzhi "Notes and Commentaries Preface")
Informal set of conventional conservative
  不拘守旧套常规。《庄子·天运》:“其声能短能长,能柔能刚,变化齐一,不主故常。” 成玄英 疏:“齐变化之一理,岂可守故而执常!” 宋 叶梦得 《石林诗话》卷上:“禪宗论 云间 有三种语;其一为随波逐浪句,谓随物应机,不主故常。”
No. 3
  成语 不主故常
  发音 bù zhǔ gù cháng
  解释 故常:旧的常规、习惯。不拘于老的一套。
  出处 《庄子·天运》:“其声能短能长,能柔能刚,变化齐一,不主故常。”
  示例 而其盘盘之气,熊熊之光,浏漓顿挫,~。 ★清·莫友芝《巢经巢诗钞序》
English Expression
  1. v.:   be flexible,   be ready to adapt to circumstances