Correct

披外衣

/ pī wài yī / 
Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/披外衣-Chinese-idioms-Cchatty-61478942-6357-4353-9512-17a622efba6e-1612777234.jpg

Collocation

1
披着合法的外衣行骗
2
披着……的外衣
3
披着各种漂亮的外衣

Definition

披外衣

Literally means:

putting an overcoat on one's shoulder

Actually means:

under a legitimate cover

Literally it means putting an overcoat on one's shoulder. It figuratively means doing something unreasonable or illegal under a legitimate cover. Derogatory.

把外衣搭在肩背上。比喻用合情合理或正当的名义做不合情理或不正当的事。具有贬义色彩。

Example

Used as predicate, attributive or adverbial adjunct. It can be used with other words in between. (作谓语、定语、状语,中间可以插入别的词语)
1
Yīxiē
一些
rén
人
yǒuyì
有意
kuādà
夸大
bǎojiànpǐn
保健品
de
的
gōngnéng
功能
  
,
pī
披
zhāo
着
wéi
为
dàzhòng
大众
jiànkāng
健康
fúwù
服务
de
的
wàiyī
外衣
zuō
作
wéifǎ
违法
de
的
shìqing
事情
  
。

Some people deliberately exaggerate the function of health care products, wearing the cloak of serving the public health as illegal things.

2
Zuìjìn
最近
yǒurén
有人
pī
披
zhāo
着
yǒuqíng
友情
gàozhī
告知
de
的
wàiyī
外衣
  
,
piànqǔ
骗取
yínháng
银行
yònghù
用户
zhàngháo
帐号
  
,
cóngér
从而
dádào
达到
piànqǔ
骗取
qiáncái
钱财
de
的
mùdì
目的
  
。

Recently, some people wearing the cloak of "friendship notice", defrauded the bank user account number, so as to achieve the purpose of swindling money.

3
Yùyán
寓言
zhōng
中
yǒu
有
pī
披
zhāo
着
yángpí
羊皮
de
的
láng
狼
bǎ
把
yáng
羊
chī
吃
diào
掉
de
的
gùshì
故事
  
,
ér
而
xiànshí
现实
zhōng
中
yě
也
bùfá
不乏
pī
披
zhāo
着
gèzhǒng
各种
piàoliang
漂亮
wàiyī
外衣
de
的
huàirén
坏人
  
。

The fable has the story of a wolf in sheep's clothing eating a sheep, and in reality there are no shortage of bad guys in all kinds of beautiful coats.