“Welcome to using the shopping guide service. How may I help you?” The image of the woman was blinking. She looked like she was running out of battery.

“Medicine!” I immediately replied.

“Med-med-medicine.” She was like a skipping record and her image was fading. I panicked and patted the platform, “Hey, don’t just speak halfway!” When I roared, the entire platform suddenly seemed fully charged. “The medicine is on the twenty-sixth floor. You can take the observatory elevator up."

Observatory elevator? How can I be sure that the elevator is still working? And I don’t even know which floor the elevator will stop at if it dies halfway.

“Which floor am I on?”

“You are now on the twenty-third floor, food zone....