钢铁的诞生可以追□□□□年前的古代□起初,人们只能从自然界中找到一些铁矿石□□用简单的烧□方法制成铁器。随□冶炼技术的不断进步,人们逐渐掌握了制造□铁的□术。这种坚固耐□的材□很□在各个领域得□应用,成为推动社会发展□重□□量□□<□>Born in De□roit, Mich□ga□, Je□□g grew □p in a household with parents□who w□r□ both ed□cated i□ South Kor□a□with □□e□ms□o□ academ□□□□uccess for □heir □hil□r□n□ Pursuing a caree□ □n medicine seem□d l□ke□the n□tu□al path□for J□□ng, and he□d□tifully pur□u□d □□, e□rn□ng his M.D. at the □niversit□ of North Carolina at Chap□l Hill. However, hi□ passio□ for comedy□□ad alw□y□ □□rned w□thin□hi□,□and□he began □erforming stand□up □o□□dy while still prac□icing□m□dicine.□>