Because of his extraordinary handsomeness and popularity among female fans. Jang dong-gun often played romantic parts in most of his previous works. Still his works showed clearly that he made an effort in choosing parts with different characters and played them with a wide range of styles, most notably in 'Medical brother','Love wind love song' and 'All about Eve'.But Dong-su in 'Chin goo'is a totally different genre of roles he used to play the result really shows what a consummated actor Jang dong-gun is.
The movie of course is good. It becomes the most money making film in Korean history and won many awards including Jang dong-gun's best supporting actor in Asian film festival. It is a gangster movie but focus more on the characters and their friendship. Dong-su ,a quite tragic and anti-hero character, with no elegance and glory, is opposite of what audience would expect if they are used to a regular Hong Kong style ganster film. With Jang dong-gun's performance, Dong-su's suppressed rage and sadness were effectively but delicately shown, though ruthless in mob confrontations, the audience would still feel sympathetic and mourn for his inevitable death. Besides Jang dong-gun, everything else is also excellent, the photography, the story, the directing styles, other actors, especailly Yu oh-seong (who also won the best actor award in Asian film festival) who play Jeong-suk.
