只
知
其
一
，
不
知
其
二
z
h
ǐ
z
h
ī
q
í
y
ī
,
b
ù
z
h
ī
q
í
è
r
Definitions
1. to know the first, but not know the second (idiom); only partial information
Components
只
zhǐ
–
only
知
zhī
–
to know
其一
qí yī
–
one of the given (options etc)
不知
bù zhī
–
not to know
其二
qí èr
–
secondly