Correct

狐假虎威

/ hú jiǎ hǔ wēi / 
Strokes

Definition

lit. the fox exploits the tiger's might (idiom); fig. to use powerful connections to intimidate people

Example

Definition

the fox borrows the tiger's terror (by walking in the latter's company)―bully people by flaunting one's powerful connections; borrow power to do evil; swagger about in borrowed plumes; browbeat others by virtue of sb else's influence

1
Bùyào
不要
yǐwéi
以为
nǐ
你
bà
爸
shì
是
xiàozhǎng
校长
  
,
nǐ
你
jiù
就
kěyǐ
可以
hújiǎhǔwēi
狐假虎威
  
,
wéisuǒyùwéi
为所欲为
  
。

Don't think you can do whatever you want just because your father is the headmaster of our school.