During Song Joong Ki's fan meeting in China, he talked about the bromantic move he made at the set of 'Descendants of the Sun' for his best friend Lee Kwang Soo, who was also present at his fan meeting as a special guest.
Song Joong Ki said, "During the filming for 'Descendants of the Sun', I engraved Kwang Soo's name in a stone at the beach in Greece. It was the first time I ever did such a thing." Lee Kwang Soo then pretended to vomit, and responded, "Yeah, it's first for me as well..."
What a lovely(?) friendship!