2013022100735_2 Gong Yoo's contract with Discovery Expedition has been renewed and the actor will be in the brand's upcoming advertisement. The ad is scheduled to hit TV airwaves on March 21st and the teaser pictures show an amused Gong Yoo floating across the sky in a hot air ballon. 2013022100735_1 And here he is walking on clouds: 2013022100735_3 What do you think of the ads? (Source: www.thestar.chosun.com)