Anti-Japanese War: I Am a Military Expert, Relying on a Donkey to Pull Machine Tools?

When he opened his eyes, Lin Huai traveled from the modern weapons laboratory to the bloody battlefield of 1937. The Japanese machine guns smashed the position, the soldiers charged with misfire grenades, and Hanyang made a bomb to injure his own people first. Others traveled across time to send guns and artillery, but he bound to the "Great Power Heavy Industry System", but his first task was to make 300 qualified grenades and 100 home-made landmines in a month. No machine tool? No electricity? No steel? There was only a half-collapsed yard, an earthen stove, five old blacksmiths, and a lame donkey! Lin Huai directly overturned the old rules: all spent bombs were recycled, inferior drugs were re-formulated, earth furnaces were changed into air ducts, and donkey power drove the industrial machine to launch! Starting from the first grenade that can kill the Japanese, to the mine array tearing apart the sweep team, to the roaring formation of the ravine arsenal. The Japanese thought that the Eighth Route Army only had fire sticks to burn, until they discovered that every explosion on the front line was rewriting the industrial destiny of this era. But when the first "donkey-pulled industrial machine" was successfully put into operation, the system unlocked an even more terrifying drawing...