The elevator directly reached the presidential suite on the top floor.
The hotel hosting the masquerade ball was owned by the Emperor.
Everything here belonged to Xing Chen.
Of course, that included the most luxurious suite here.
When they entered, Ran Xiangsi didn't see Xing Chen use a key or a card to get in. He just casually glanced at a small camera above the door.
Then there was a ding sound, and the door opened.
Ran Xiangsi followed him in, nodding with understanding, "So it's an iris lock."
This kind of device relies on recognizing the iris in a person's eye to determine whether to unlock the door.
The iris in the pupil is as unique as a person's fingerprint.
For someone of Xing Chen's esteemed status, naturally, he'd use such high-tech security equipment to match his identity!
Conversely, seeing how Ran Xiangsi recognized the equipment at a glance, the admiration in Xing Chen's eyes grew even deeper.
So then...