[1][2][3] Prior to entering politics, Yun worked as a researcher and a professor at the Korea Development Institute (KDI), specialising labour, finance, income, welfare and middle class issues.

[1][2][3] Prior to the 2020 election, Yun was brought into the newly formed conservative United Future Party (UFP).

"[6][7] During the speech, she criticised the ruling Democratic Party for the newly passed 3 Rental Acts.

[1] She is harshly critical towards the President Moon Jae-in, accusing his economic policy as "populism" since a researcher of the KDI.

[12][13] In order to overcome this issue, she had suggested an idea, which is that an artificial intelligence (AI) provides exercises that are suitable for each student.

[13] She also analysed that the current South Korean education system has failed to innovate due to high restrictions towards e-learning and strong objections from teachers and lecturers.