courtyard house with a fully enclosed courtyard (type of Chinese residence)
Definitions (粵典–words.hk)
名詞
一種傳統中式建築形式：前後兩個廳堂，左右兩邊設走廊或者廂房，中間隔住一個庭院，四面合埋（量詞：間） Chinese-style courtyard house; traditional Chinese house with a rectangular courtyard
Definitions (Wiktionary)
noun
siheyuan; Chinese courtyard residence; Chinese quadrangle
In Beijing, hutongs are alleys formed by lines of siheyuans, the traditional courtyard residences.
Mandarin
一个胡同连接另一个，四合院和其他四合院形成一个街区，而街区跟其他街区汇集成一个城市。
一個胡同連接另一個，四合院和其他四合院形成一個街區，而街區跟其他街區匯集成一個城市。
yí gè hú tòng lián jiē lìng yī gè ， sì hé yuàn hé qí tā sì hé yuàn xíng chéng yí gè jiē qū ， ér jiē qū gēn qí tā jiē qū huì jí chéng yí gè chéng shì 。
One hutong connects with another, siheyuans connect with other siheyuans to form a block, and blocks join with other blocks to form the whole city.
Mandarin
这些高官和富商的大四合院常常有精美雕刻并粉刷的横梁和柱子，并伴有精心修剪的花园。
這些高官和富商的大四合院常常有精美雕刻並粉刷的橫樑和柱子，並伴有精心修剪的花園。
zhè xiē gāo guān hé fù shāng de dà sì hé yuàn cháng cháng yǒu jīng měi diāo kè bìng fěn shuā de héng liáng hé zhù zi ， bìng bàn yǒu jīng xīn xiū jiǎn de huā yuán 。
The large siheyuans of these high-ranking officials and wealthy merchants often featured beautifully carved and painted roof beams and pillars and carefully landscaped gardens.
Mandarin
他们的四合院要小得多，设计和装饰也比较简单，胡同也比较窄。
他們的四合院要小得多，設計和裝飾也比較簡單，衚衕也比較窄。
tā men de sì hé yuàn yào xiǎo dé duō ， shè jì hé zhuāng shì yě bǐ jiào jiǎn dān ， hú tòng yě bǐ jiào zhǎi 。
Their siheyuans were far smaller in scale and simpler in design and decoration, and the hutongs were narrower.
Mandarin
因为几乎所有的四合院有南面的门和主要楼房，所以大部分的胡同是从东到西建造的。
因為幾乎所有的四合院有南面的門和主要樓房，所以大部分的衚衕是從東到西建造的。
yīn wèi jī hū suǒ yǒu de sì hé yuàn yǒu nán miàn de mén hé zhǔ yào lóu fáng ， suǒ yǐ dà bù fen de hú tòng shì cóng dōng dào xī jiàn zào de 。
Nearly all siheyuans had their main buildings and gates facing south for better lighting, so a majority of hutongs run from east to west.