Correct

拍胸脯

/ pāi xiōngpú /
Strokes

Definition

to vouch for

Example

As a Verb

slap one's chest as a gesture of promise or guarantee; vouch for

1
rán
既然
lǐngdǎo
领导
pāi
le
xiōng
胸脯
  
,
men
我们
jiù
fàngshǒu
放手
gàn
  

Since the leadership has promised full support, let's go all out to do it.

2
gǎn
pāi
xiōng
胸脯
  
,
jiù
fàngxīn
放心
le
  

I'll not worry if you vouch for it.