Swordsmanship in Business War

Others led troops to fight in time-travel and sword-fighting, but Shen Huai brought a box of compressed biscuits to Li Yunlong to do business. "Old Li, would you like to exchange penicillin for the Japanese army's saber?" "Done!" From then on, Shen Huai went back and forth between the modern and bright sword worlds, trading industrial alcohol for sake, and trading electronic watches for pocket watches. Until one day, he brought in a box of mortar shells. Li Yun asked with red eyes: "Who are you?" Shen Huai pointed to the sky: "He's delivering goods to our Eighth Route."