Correct

私话

/ sī huà / 
Strokes

Example

As a Noun

confidential talk; private talk

1
Zhè
这
shì
是
zánmen
咱们
liǎ
俩
de
的
sīhuà
私话
  
,
nǐ
你
kě
可
biè
别
wǎng
往
wài
外
shuō
说
  
。

This is just between you and me; don't tell anybody else about it.