Tianjin: Work-Study to Save the Country

In 1919, when Tianjin was in a storm, Lin Yan, an engineering genius from the Beiyang Polytechnic School, used a carving knife as his blade and machinery as his strategy, and embarked on the road of espionage amidst ink and gunpowder smoke. The white moonlight Su Wanqing who expresses love through words, and Shen Ruoyan, a valiant comrade-in-arms who works in the concession, build a defense line with flesh and blood, walking through the shadow of the Spark and Iron Eagle agents of the Awakening Society. The hidden secrets of engineering are hidden, secret messages are conveyed in coded poems, murderous plans are hidden in Haihe Pier, and secret wars in the concession show off their edge. Faced with the choice between Gu Shenzhi's sinister killing and the righteousness of their family and country, they used their youth to go on missions, used their blood to ignite the dark fire, wrote the legend of faith of "saving the nation through engineering and learning" in troubled times, and guarded the dawn of their family and country in the confusion of espionage wars.