When the auction was in mid stages of bidding, Rio signaled Esme removed the enhancement on the front glass, making it two way. Immediately everyone could see who was sitting inside as their names or family/organization crest became visible on glass's top.
Another trick VIP's use in auctions to pressurize other bidders to not compete with them. Normally when any VIP rooms bid, they use the tablets given to them to type the amount and that'll show up on the glass window. But since the glass rolled down, now they have to speak up their own amounts. Showing their background, so everyone knows not to drag the items they want.
Seeing his actions, some of the other VIP rooms also followed suit, while most still preferred to remain secretive.
From the beginning to end, Rio didn't bid on anything yet, so when the next item appeared, he directly increased the price of an item by several fold, hoping to end the bidding instanously.
Yet how can it be so easy?