1937: the War of Resistance Begins from a Broken Blacksmith Shop

In 1937, the North River defense line was on the verge of collapse. Xu Yanchuan, a modern military engineer, became an ordnance clerk who was about to be shot. Outside the position, the Japanese troops were charging; in front of the trench, a dumb bomb could explode at any time. He only has three minutes to prove that he can save everyone. By touching battlefield waste, Xu Yan can deduce the structure, malfunctions and manufacturing processes of weapons. But Tupu doesn't give guns or supplies. Lack of steel, coal, and equipment, blocked by enemy forces outside, and infiltrated by traitors inside, he could only start with a dumb bomb, a jammed machine gun, and a broken blacksmith shop. Repair guns, make mines, investigate black accounts, seize coal wells, and build workshops. When the enemy finally realized that there was a real ordnance engineer hidden in Baishi Town, the fire in the broken blacksmith shop had already burned into the mountains. This time, Xu Yan wanted the guns in the hands of the Chinese soldiers to keep ringing.