Winter 1938, Shanghai French Concession. When Lu Yao, manager of Yongfeng Commercial Bank, was pouring tea for someone, he tapped the side of the cup three times with his fingertips. Wang, the pseudo-intelligence director opposite, suddenly broke out in a cold sweat - this was the seventh day after he received the "tea is cold" signal, and it was also the last moment of his life countdown. No one knew that this young man with a gentle smile and soft eyes held the most sophisticated noose on the entire island. When the military commander wanted to kill someone, he took the initiative to instigate rebellion; when the Japanese army wanted to protect the line, he silently cut off it. Masao Miyamoto, the director of the Special Higher Education Course, set up an iron barrel array, but Lu Yao walked into the enemy camp with a bowl of glutinous rice balls. The next day, three Japanese intelligence agents defected, and two top-secret documents appeared on the table in Chongqing. Shen Ruoheng asked him: "Aren't you afraid?" He wiped off the tea stains on his fingertips and whispered: "Afraid. But this isolated island needs someone to hold an umbrella gently." When Miyamoto finally spelled out the word "Lu Yao", the entire list of traitors in the French Concession had become abandoned pieces on his chessboard. And the last one will fall between Miyamoto's eyebrows. In this smokeless battlefield, the real killing move is never a gun - it's laughter, tea, and every seemingly unintentional step.
