The ‘masked KangChi’ scene was filmed on a set in Yongin starting at 1am on May 29. It rained a lot on that day, so the humidity on the set was quite high. And due to the humidity, the temperature on the set was also high, and it was hard to even breathe! But the terrible working condition didn’t faze Lee Seung Gi at all during the 3 hours of filming.
With more than half of his face covered by the mask, it wasn’t easy to show expressions, but Lee Seung Gi was praised by the staff for expressing emotions fiercely through his eyes.
source: osen via nate
English translation: tryp96.wordpress.com