乘趁，因；兴兴致，兴趣。趁着兴致来到，结果很扫兴的回去。
《晋书·王徽之传》人问其故，徽之曰‘本乘兴而来，兴尽而反，何心见安道邪？’”
正是～，败兴而返。★明·冯梦龙《东周列国志》第一回
Learn the next connected idiom: 乘兴而来 (chéng xìng ér lái) → 来之不易 (lái zhī bù yì)
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