放浪形骸

From the Preface to the Poems Composed at the Orchid Pavilion by Wang Xizhi:

夫人之相與，俯仰一世，或取諸懐抱，悟言一室之内，或因寄所託，放浪形骸之外。 [Literary Chinese, trad.]

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夫人之相与，俯仰一世，或取诸怀抱，悟言一室之内，或因寄所托，放浪形骸之外。 [Literary Chinese, simp.]

From: 353, 王羲之,《蘭亭集序》

Fú rén zhī xiāngyǔ, fǔyǎng yīshì, huò qǔ zhū huáibào, wùyán yī shì zhīnèi, huò yīn jì suǒ tuō, fànglàng xínghái zhīwài. [Pinyin]

For what men have to do with their fellows during their lifetimes, either fetched from their bosoms and discussed with others in certain rooms or taken from their apprehension and cast abroad far beyond their corporeal frames.

放浪形骸

1. to refuse to be bound by convention; to abandon oneself to Bohemianism