Correct

常言道

/ cháng yán dào /
Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/常言道-Chinese-idioms-Cchatty-b286dbba-aa86-49c7-bb20-afa3b1bcdd9c-1612777011.jpg

Collocation

1
正如常言所道,……
2
常言道,……

Definition

常言道

Literally means:

as the proverb says; as the saying goes

Actually means:

常言 means a saying or proverb. 道 means saying or going.

This phrase means that it is often said that …, used to introduce a saying or proverb.

常言,人们常说的俗语、格言一类的话。道,说。

常言道,人们常用的现成话说……,作为导语,用来引出俗话、格言之类的话。

Example

Used as predicate. It can have other words in between. (作谓语,中间可以插入其他成分)
1
Chángyándào
常言道
  
,
tiáotiáo
条条
dào
道路
tōng
luó
罗马
  
,
zhǐyào
只要
rènzhǔn
认准
le
fāngxiàng
方向
  
,
tiáo
dōu
néng
dào
达到
目的
  

As the saying goes, a road through Rome, as long as the direction is recognized, which road can achieve the goal.

2
Zhèng
正如
chángyán
常言
suǒ
dào
  
,
zàiwèimóuzhèng
不在其位不谋其政
  
kāi
离开
le
chùzhǎng
处长
zhège
这个
wèizhi
位置
  
,
dāngrán
当然
yuàn
zài
guǎn
men
你们
de
shì
le
  

As is often said, not in his place does not seek his own government. He left the position of director, and of course he didn't want to take care of your business any more.

3
Chángyándào
常言道
  
,
hángshān
隔行如隔山
  
,
tóng
不同
de
zhuān
专业
zhījiān
之间
chā
差距
hěn
  

As the saying goes, interlases are like mountains, and there is a big gap between different majors.