Wen Nan finished speaking and his gaze returned to the robotic floor cleaner.
It was larger than most robotic floor cleaners Wen Nan had seen in the real world, estimated to be as big as a stone table in the park and just below knee height.
Judging by its design, from the rotating discs forming its body to the rollers and rows of tight little brushes at the bottom, one could instantly recognize it as a robotic floor cleaner. Given its model, it didn't look like a household device; it might have been used in public places like malls or streets.
On top of the robotic floor cleaner, two small round signal lights were embedded with two pinhole cameras, probably serving both illumination and image signal reception functions.
As Wen Nan stared at it, those two "beady eyes" lifted and gazed back at Wen Nan, like a tortoise staring at a green bean. The person and the machine had a staring match, then "click," the robot retracted the brake on its rollers and rolled towards Wen Nan.
