It wasn't that there weren't people trying to cheat the system; Tang Mo just hadn't seen them.
Right at the beginning, the guards had caught someone breaking the rules. The man was dressed respectably but had tried to get in by just tossing down two Crystal Coins. After the guards discovered the Space Ring on his hand, he started weeping profusely, but by then it was too late.
His wife and daughter were denied entry along with him. Only then did the man realize the gravity of the situation, but his desperate crying with his family outside the Protective Shield was pointless.
Seeing the man outside, a sobbing mess, served as a stark warning to everyone. With such a cautionary tale before them, no one dared to try and fool the guards again. Besides, everyone was frozen to the point of numbness. They no longer cared about worldly possessions; they just wanted to get warm as quickly as possible.
