It is almost a shot-for-shot remake, aside from the setting, language, and actor changes, a few details (Hyun-jun previously played baseball, whereas his Chinese counterpart, Hongrui, played tennis), and an additional scene that pays homage to the 2004 film Bunshinsaba.
This remake is nearly identical to the original, differing only in setting, language, and actors. It retains most scenes but includes some modifications (Hyun-jun previously played baseball, while Hongrui played tennis), and adds a scene that references the 2004 film Bunshinsaba.