Su Xuanyun, a former military history researcher, is reborn as an archivist at the Shanghai General Chamber of Commerce and awakens the Tarkov System. By deciphering the flow of strategic materials in the chamber's classified files, he forges a promissory note from the Yokohama Specie Bank on the eve of the August 13 Incident, prompting the early relocation of key equipment from the Jiangnan Shipyard. Historical records say that this equipment should have been destroyed in the flames of war, yet it became the “mysterious machine tools accidentally acquired by the Yan'an Arsenal.”
