Jiang Feng jumped into the world of "Bright Sword" through time travel and became the political commissar of the Independent Regiment. Before the Japanese artillery towers were dismantled, they encountered a shocking case. There was a mole hidden in the top management of Yan'an, code-named "Yan-03", who was feeding a steady stream of Eighth Route Army intelligence to the Japanese army.
From Heifengkou to Beiping City, from Baoding Power Supply Station to the deep mountains of Yaozijian, Jiang Feng relied on modern engineering technology and criminal psychology to tear apart disguises, decipher codes, and reverse infiltration step by step. But it was only at the last moment that he discovered: Yan-03 was not a traitor, but had spent four years setting up a chess game that spanned time and space.
The lives of six engineering soldiers, three sets of transmission channels, and a secret that can rewrite the history of the Anti-Japanese War. When the zero-day coordinates were locked on July 6, 1937, Jiang Feng had to make a choice between returning home or defending the city. And the man who controlled everything was standing in front of the door frame, waiting for him.
