Correct

讳莫如深

/ huì mòrú shēn /
Strokes

Definition

important matter that must be kept secret (idiom); don't breathe a word of it to anyone!

Example

Definition

carefully avoid mentioning sth; closely guard a secret; not breathe a word to a soul; not utter a single word about sth

1
Huángshì
皇室
de
cǎn
惨剧
huìshēn
讳莫如深
  
,
jiūjìng
究竟
shēng
发生
le
shénme
什么
  
,
méi
媒体
diǎn
qíngkuàng
情况
dōu
gǎo
dào
  

The tragedy in the royal family was carefully concealed and the media could not get a clue as to what had really happened.