Correct

三寸不烂之舌

/ sān cùn bù làn zhī shé /
Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/三寸不烂之舌-Chinese-idioms-Cchatty-3fe925c8-aa1c-4ec5-8fd8-ed35ed63941c-1612776156.jpg

Collocation

1
有三寸不烂之舌
2
凭三寸不烂之舌

Definition

三寸不烂之舌

Literally means:

little lithe tongue

Actually means:

eloquent tongue

It figuratively means one has a facile tongue and is very eloquent. It may also refer to a cunning and deceiving lie.

比喻很会说话,很会辩论的口才。也指巧妙骗人的谎话。

Example

Used as object. (作宾语)
1
zhèxiē
这些
rén
个个
dōu
yǒu
sāncùnlànzhīshé
三寸不烂之舌
  
,
rénrén
人人
néngyánshànbiàn
能言善辩
  
,
可以
rén
死人
shuō
chéng
huórén
活人
  

Each of these people has three inches of tongue, everyone can speak eloquently, can say the dead as living people.

2
hěn
wán
顽固
  
,
shǐ
即使
sāncùnlànzhīshé
三寸不烂之舌
  
,
nán
shuō
说服
  

He's stubborn, and you can't convince him even if it's three inches.

3
Zhège
这个
piànzi
骗子
jiù
píng
sāncùnlànzhīshé
三寸不烂之舌
  
,
piàn
骗取
le
kuǎn
巨款
táozǒu
逃走
le
  

The fraudster escaped with three inches of unspoided tongue and cheated him out of a huge amount of money.