This is already in the 6 man paper, that's how the internet deduced their story:

"ACKNOWLEDGEMENTS We acknowledge late Prof. Chair Tong-seek for initiating research of a 1-dimensional superconductor of over room temperature at atmospheric pressure. In particular, his enthusiasm on superconductor study impressed many researchers. "

If this works out, this will be by far the biggest invention from Korea ever. They will be remembered in every Korean textbook to the end of time.