zhuī gēn
to trace sth back to its source
to get to the bottom of sth
zhuī gēn sù yuán
to pursue sth back to its origins
to trace back to the source
to get to the bottom of sth
zhuī gēn jiū dǐ
to get to the heart of the matter
zhuī gēn wèn dǐ
lit. to examine roots and inquire at the base (idiom); to get to the bottom of sth
zhuī gēn qiú yuán
to track sth to its roots
zhuī gēn jiū dǐ r
erhua variant of 追根究底[zhui1 gen1 jiu1 di3]
zhuī gēn xún dǐ
see 追根究底[zhui1 gen1 jiu1 di3]