Records of the Ming Dynasty's Water Transport

In order to avoid the anxiety of failing a subject, Miao Dong, a junior student, opened a yellowed "Caoyunzhi" in the city library. However, the moment he closed the book, he fell from the modern library into Tongzhou Caogang in the 26th year of Wanli. He carries this "key of time and space" that records the rise and fall of water transportation, wears a sweatshirt that is "tied with soft iron wire" in the eyes of Ming Dynasty people, and becomes the most eye-catching "alien" at the dock. Porters were severely punished for throwing grain, civilian ships were forced to destroy their cargo by official ships, more than half of the grain was lost but no one could solve it - the cold "supply chain problems" in the textbooks turned into the blood and tears of countless people at the bottom before their eyes. When he used his modern logistics knowledge to propose "separation of responsibilities among three posts" and "separation of navigation routes", he was unexpectedly appreciated by the upright Chief Li. He was about to gain a foothold in the Ming Dynasty Water Transport, but he didn't know that Deputy Chief Chen in the dark had been eyeing the cloth bag on his waist. What makes Miao Dong even more alarmed is that some unrecorded water transport crises in the book are quietly deviating from their original trajectory with his intervention...