Though there is no guarantee that they would recognise them just because they bid for an item in the auction. But still, if one thought about it rationally, most of the influential clans and strong experts were sitting in the upper section of the hall.
The ones sitting in the middle section were practitioners who didn't belong to any sect or were opportunists who were attracted over by the allure of treasures.
There is no way they could pull out that kind of sum out of nowhere. So if a bid over thirty Amethyst profound stones came from the middle section, it would naturally evoke some thought.
The rational answer one could come to was that they were either some powerful experts who came from a distant region or were someone who couldn't reveal their identity.
Given that the trio already had information on Tang Xun'er it wouldn't be hard for them to connect the dots and come to a conclusion.
