When Zimmer's ribs were broken by the three rifle butts of a military special agent, he suddenly understood the enemy's Morse code-like heartbeat - he could actually steal the dying man's lifelong espionage experience. Three days later, the low-level intelligence agent who was treated as cannon fodder walked out of the torture room and whispered to the spy chief: "The 'Buddhist shrine' you installed in Yan'an, codenamed Hummingbird, was moved to Nianzhuang last night." Everyone was shocked. When everyone thought he was the sharpest knife in the military, a soul-breaking song sounded on the radio station in Yan'an - it was the 37th top-secret intelligence he sent, codenamed "Funeral".
