"It's not very useful. It's just the sweeping machine I created in my spare time. It can sense automatically and operate in a foolish way. It doesn't need human participation at all!" Chen Jiu understated the characteristics of the floor sweeping machine.

"This... There is such a delicate and ingenious mechanism, I am willing to bow down, I wonder if you can give me a study of it? How arrogant a young man is in his dream of fire. At this time, he even bowed his head voluntarily. He looked at the sweeping machine with that kind of look, which was absolutely eager to the extreme.

"Sorry, we are not...