경영 [gyung yung] = management, administration

그는 16세의 나이에 처음으로 사업을 경영했습니다.

geu neun ship yook se eui na i e chuh eum eu ro sa up eul gyung yung het seup ni da.

= He ran his first business when he was only 16.

https://www.learnwitholiver.com/korean/daily-sentence-1871