What is Cho Hee-dae's true background?

Is he a clean, honest, and righteous Judge Bao?
Or is he a judge and legal senior like Lee Wan-yong?
Born in Gyeongju in 1957.
There are almost no records regarding his parents from the Changnyeong Cho clan.
After graduating from Gyeongbuk High School, he attended Seoul National University College of Law, passed the bar exam,
served as a legal officer in the Army Logistics Command, and was discharged.
What I am focusing on is
Presiding Judge at Daegu District Court in 1998
Presiding Judge at Seoul Central District Court in 2003
Chief Judge of Daegu District Court in 2012
Supreme Court Justice in 2014
He has no parental connections, so what on earth is his backing?
And he eventually becomes the Chief Justice of the Supreme Court.
He is truly a fascinating and mysterious figure.