<p>四海如家 doesn't sound like an idiom. I think 四海为家 is what you are talking about. 
In ancient china, people didn't have the idea of oceans named Pacific, Indian... They tended to believe china was surrounded by 4 seas, 东海, 南海, 西海, 北海(if you know the chinese myths you might have heard of 四海龙王). 
In the idiom, 四海 means anywhere, or the whole world (Ancient chinese also believed the territory of Ancient China was the whole world).  </p>

CC BY-SA 3.0
2012-02-02T03:04:12.810Z
Sorry, I've edited my question, the one I was after is 四海一家 which is displayed in Chinatown in Sydney Australia. http://www.panoramio.com/photo/31515143
going
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2012-02-04T18:04:07.353Z
+1 for the correlation to 四海龙王.
Laguna
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2012-02-02T01:53:58.253Z
2012-02-02T01:53:58.253Z
Fivesheep
<p>As Fivesheep pointed out, “四海” means "the whole world". The word "四海一家" means "the whole world is one family". It is used to expressed that "we are family. we shall respect each other. we shall unite", something like this, to convey the politeness from the overseas Chinese people to the local people(in your case, the Australian people).</p>

<p>I believe this word comes from the book of 《论语》. It records a speech from a Confucius's disciple "子夏": "四海之内，皆兄弟也。",which means "[if you are a gentleman and you are polite to other people],all the people in the world are your brothers".</p>

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2012-02-02T09:03:36.937Z
+1 for explanation of 《论语》
Dante WWWW
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2012-02-07T21:07:30.463Z
+1 for the classical reference. i have to admit that i've never liked the analects as much as the dao de jing, the sutras, the hanfeizi, the mengzi, or pretty much *anything* else in classical Chinese literature. but there's something musical about it that i like in the original language.
magnetar
CC BY-SA 3.0
2012-02-02T04:14:15.817Z
2012-02-02T04:14:15.817Z
Huang
<p>There are several sayings and idioms similar to 四海一家 which reference "四海".</p>

<p>Does the 四海 actually refer to 4 specific oceans such as the Indian, Pacific etc. or is it more of a metaphor for all of the oceans in the world?</p>

CC BY-SA 3.0
2012-02-02T03:03:26.740Z
you'd better look up in the idiom dictionary before asking questions here,and it can provide you very detailed explanations.
coqer
<meaning><classical-chinese><literary-chinese><chengyu>
Specifics of the idiom "四海一家"
# Specifics of the idiom "四海一家"

(Asked by: username_0 on 2012-02-02)

There are several sayings and idioms similar to 四海一家 which reference "四海".

Does the 四海 actually refer to 4 specific oceans such as the Indian, Pacific etc. or is it more of a metaphor for all of the oceans in the world?

**Tags:** meaning, classical-chinese, literary-chinese, chengyu

> **Comments:**
> **username_1**: you'd better look up in the idiom dictionary before asking questions here,and it can provide you very detailed explanations.  

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## 2 answers

### Answer by username_4 on 2012-02-02. Score: 10 | Accepted answer

As username_2 pointed out, “四海” means "the whole world". The word "四海一家" means "the whole world is one family". It is used to expressed that "we are family. we shall respect each other. we shall unite", something like this, to convey the politeness from the overseas Chinese people to the local people(in your case, the Australian people).

I believe this word comes from the book of 《论语》. It records a speech from a Confucius's disciple "子夏": "四海之内，皆兄弟也。",which means "[if you are a gentleman and you are polite to other people],all the people in the world are your brothers".

> **Comments:**
> **username_5**: +1 for explanation of 《论语》  
> **username_6**: +1 for the classical reference. i have to admit that i've never liked the analects as much as the dao de jing, the sutras, the hanfeizi, the mengzi, or pretty much *anything* else in classical Chinese literature. but there's something musical about it that i like in the original language.  

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### Answer by username_2 on 2012-02-02. Score: 5

四海如家 doesn't sound like an idiom. I think 四海为家 is what you are talking about.
In ancient china, people didn't have the idea of oceans named Pacific, Indian... They tended to believe china was surrounded by 4 seas, 东海, 南海, 西海, 北海(if you know the chinese myths you might have heard of 四海龙王).
In the idiom, 四海 means anywhere, or the whole world (Ancient chinese also believed the territory of Ancient China was the whole world).

> **Comments:**
> **username_0**: Sorry, I've edited my question, the one I was after is 四海一家 which is displayed in Chinatown in Sydney Australia. http://www.panoramio.com/photo/31515143  
> **username_3**: +1 for the correlation to 四海龙王.  

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