Correct

连理枝

/ lián lǐ zhī / 
Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/连理枝-Chinese-idioms-Cchatty-c6d3df10-b013-48c7-a255-fe65af56c5ca-1612778296.jpg

Collocation

1
人称连理枝
2
结为连理枝
3
喜结连理枝

Definition

连理枝

Literally means:

interlocked branches from different trees

Actually means:

a couple in love

连理, different trees whose branches are interlocked (which is rare sight, and it was considered as a lucky sign in ancient China).

The whole phrase metaphorically refers to a couple very much in love or intimate lovers. Commendatory.

连理,本来不同根的草木,其枝干连生在一起(这是自然界罕见的现象,古时被认为是吉祥的征兆)。

连理枝,比喻恩爱夫妻。也指关系亲密的人。具有褒义色彩。

Example

Used as object. (作宾语)
1
Tāmen
他们
yóu
由
hǎo
好
péngyou
朋友
fāzhǎn
发展
wéi
为
liànrén
恋人
  
,
zuìhòu
最后
zhōngyú
终于
xǐjiēliánlǐzhī
喜结连理枝
  
。

They developed from good friends into lovers, and finally married.

2
Liǎng
两
qíng
情
xiāngyuè
相悦
  
,
nǐ
你
qíng
情
wǒ
我
yuàn
愿
  
,
zhēnxīn
真心
xiāngduì
相对
  
,
zài
在
tiān
天
yuàn
愿
zuō
作
bǐyìniǎo
比翼鸟
  
,
zài
在
dì
地
yuàn
愿
wéi
为
liánlǐzhī
连理枝
  
。

Two feelings happy, you love me, really relative, in heaven willing to make a wing bird, in the ground willing to even branch.

3
Tāmen
他们
shì
是
gāndǎnxiāngzhào
肝胆相照
de
的
hǎo
好
péngyou
朋友
  
,
dàjiā
大家
dōu
都
chèn
称
tāmen
他们
wéi
为
liánlǐzhī
连理枝
  
。

They are good friends of liver and bile, and they are all called lids.