I'm guessing Medel took the measures to win this double ring out but it's hard to say since we don't know the exact rules for these circumstances and we didn't get a detailed description of what exactly happened during the fall.
Often the rules for such cases are: whoever touches the ground first loses. But then there's often the more ambiguous rule that the fighter who is determined to have been the one attacking is the one who wins, even if they touched the ground first in order to break their fall. Now it's quite clear that Gaolang was the one punching Medel out, but Medel was the last one to "attack" by "throwing" his opponent out of the ring (though if you consider he's ended up underneath Gaolang, I would not consider that he dominated the exchange).
If draws are allowed, it could be a draw.
It draws are not allowed, and the circumstances do not allow determining a winner, then they will likely be asked to fight again (and Medel is in no shape to continue).
It's too bad Medel's master plan did not allow him to throw Gaolang out while staying in the ring and honestly, if you look at the way he throws Gaolang out, by ensnaring Gaolang in his legs, while arching his back and head as far down as possible, I can hardly believe that Medel didn't touch the ground first. Ah wait, he also grabbed Gaolang's right arm so that would be sticking out and touch the ground before his body. Are there cameras all over that can record who touches the ground first? Because there's only one referee that I recall and they're standing on the ring with no view on that action.
Well like everyone, I do think it'd be lame if that's indeed the case. It's still done according to the rules, so I can't fault Medel for doing what he needs to win.
I wonder how the crowd will take it.
@humbleoverlord
Don't worry. Medel will train his skull through partial training and gain the incredible headbutt technique: God Shiny Forehead.