My name is Yu Jianshan, and I was put on the execution ground by my own people on the first day I traveled across the country. They mistook me for the most lurking mysterious spy in the enemy country, the "Grey Bird," and prepared to shoot me on the spot.
No one knows that I have the entire intelligence network of World War II in my head, and no one knows that I am the only one in the world who can see through all the hidden secrets at a glance.
While the legendary agent who interrogated me was still using clichés, I had already drawn out the entire dark web he had set up in Europe for seven years - including the poison he had hidden in the pen that even he had forgotten.
From street beggars to imperial marshals, from secret room files to top-secret cables, everyone is frantically tracking down who the "Grey Bird" is. The real chess player Yu Jianshan was sitting leisurely opposite them drinking tea and deciding who would live and who would die in this war.
