After vacationing in Hawaii with girlfriend Ko So-young, Hallyu star Jang Dong-gun will be undergoing surgery for his left knee.

Jang has been busy working on director Kang Je-gyu’s new flick D-Day. The 38 year old then took some time off in the New Year with girlfriend of 2 years Ko So-young. The couple reportedly flew to Hawaii for some rest and relax…with their managers and staff in tow. Gee, what kind of holiday is that? 😛

After the surgery, Jang is expected to go for physiotherapy for one week. The actor injured his left knee while filming the 2003 blockbuster Taegukgi.

Jang’s Hollywood debut Warrior’s Way (formerly Laundry Warrior) will be released in the US on April 1.