It's Gong Yoo's birthday today and he turns 43! It's always inspiring to watch the veteran actor on-screen, but it's even more inspiring to watch him be himself, just a down-to-earth and generous man. So to appreciate Gong Yoo's true self, let's take a look at 10 of his Instagram posts that show he's not that different from us and introduce the real Gong Ji-cheol.