The “Back Force Concentric” was taken on the second morning of my visit to Pingtan Island. Since it was not found on the first day, I went to the net pulling place again the next morning. At this time, the fishermen finished pulling a net and put the net on the boat to prepare for the sea. In the process of the second net, at this time, eight or nine people, the front three people pushed the back six people with a big wooden stick and a thick rope to the sea with all their strength, although looking at their backs and could not see their facial expressions I have a feeling of the greatness of the working people!