As soon as the Seven Bridges Boundary Book was taken out, it rushed out of Ning Cheng's hands, suspended in the sky above the bridge and opened automatically. At the same time, the pages of the book made waves of buzzing vibrations. Then Ning Cheng was surprised to find that the endless Yin Qi on the First Naihe Bridge and the blood river under the bridge were being absorbed crazily by the Seven Bridges Boundary Book....