십백지기in English:a person who is overly meticulous or pedantic

Examples
with 십백지기.

• 그는 십백지기라서 항상 작은 것에 신경을 씁니다.geuneun sipbaekjigiraseo hangsang jageun geose sin-gyeongeul sseumnida.He is such a stickler that he always pays attention to the smallest details.