所以 suǒyǐ

1. suǒyǐ conjunction therefore / as a result / so
   Domain: Modern Chinese 现代汉语 , Subdomain: Function Words 虚词 , Concept: Correlative 关联词
   Notes: This conjunction is often used as a connecting word in the main clause of subordinate complex sentences. It is often used in the pattern 因为…，所以… to express cause and effect (Sun 2006, loc. 2053).
2. suǒyǐ phrase that by which
   Domain: Literary Chinese 文言文
   Notes: In Literary Chinese this phrase is composed of two characters, in contrast with the single word 'therefore' in modern Chinese (Pulleyblank 1995, p. 50).

Contained in

• 之所以 the reason why
• 所以然 the reason why
• 不知所以 to not know the reason / to not know what to do
• 忘乎所以 to get carried away / to forget oneself
• 知其然而不知其所以然 to know that it is so but not why it is so

Word is mentioned most frequently in

Truncated for common words

• 《中庸章句》 Commentary on Doctrine of the Mean Commentaries on the Four Books by Zhu Xi 朱熹《四書章句集注》 — count: 57
• 周語下 Discourses of Zhou III Guoyu 《國語》 — count: 42
• 卷二十二 志第二: 禮儀二 Volume 22 Treatises 2: Rites 2 Old Book of Tang 《舊唐書》 — count: 36
• 《扁鵲倉公列傳》 Biographies of Bian Que and the Duke of Cang Records of the Grand Historian 《史記》 — count: 32
• 卷二十一　要略 Chapter 21: Summary Huainanzi 《淮南子》 — count: 31
• 周語中 Discourses of Zhou II Guoyu 《國語》 — count: 28
• 《中庸》 The State of Equilibrium and Harmony, also known as the Doctrine of the Mean The Book of Rites 《禮記》 — count: 28
• 卷十六 志第六 律曆上 Volume 16 Treatises 6: Rhythm and the Calendar Part One Book of Jin 《晉書》 — count: 26
• 昭公 Lord Zhao The Commentary of Zuo on the Spring and Autumn Annals 《春秋左氏傳》 — count: 26
• 禮論篇第十九 Chapter 19: Discussion on Ceremony Xunzi 《荀子》 — count: 26