Steelloy

A few minutes had gone by, and Mary was scanning her pupil to get clearance for the training facility entry. 

To enter the training facility area, one must scan their pupil to open the door, but it was different if one were to leave. 

If one were to leave the training facility area, then there isn't a need to scan their pupil. Otherwise, it would be a troublesome matter to always enter and exit the training facility.

Mary suddenly paused, turned around, and said, "Alright, I shall leave you here, Nathan. I still need to head back to the reception area and handle the customers."

Shi Tian nodded his head.

"Thanks for the guidance, Mary." He cupped his fist and gave his thanks. 

"Anytime," Mary waved her hand. 

"Oh, by the way, it's better to not stare at someone so intensely. Otherwise, some might mistake you as a pervert." She then said, teasing him.