了
如
指
掌
l
i
ǎ
o
l
i
ǎ
o
r
ú
r
ú
z
h
í
z
h
ǐ
z
h
ǎ
n
g
z
h
ǎ
n
g
Definitions
1. to know sth like the back of one's hand (idiom)
2. to know (a person, a place etc) inside out
Components
了
liǎo
–
(of eyes) bright
如
rú
–
as
指
zhǐ
–
finger
掌
zhǎng
–
palm of the hand