C769 System Did Your Math Teacher Teach You
The Watchers were put in the sea.
This was similar to the drone Su Shengchen saw last time. It was just that this kind of equipment was more professional, and ordinary people could not make it.
This was the first time Su Shengchen saw the underwater view. He had never seen a similar diving video before. Under the sea, it seemed to be another world. The color was a little green