C1520 Defeat Mathematics with Math

"Then how do you prove that you're the director and not some other doctor pretending to be you?"

The little girl's eyes lit up as she stared straight at him.

She was tricked!

Huang Haitao snapped his fingers and said to the robot in the room.

"Can you tell this little friend who I am? Scan the two-dimensional code on my chest and confirm my identity