During the Guangming Dynasty at the end of the Tang Dynasty, just after the Huangchao Rebellion, Chang'an City was in dilapidated condition, the imperial court was weak, and the feudal vassal towns were watching. Li Ran, a modern supply chain expert, woke up from a car accident and became a low-level official in Chang'an County. He originally just wanted to survive, but he found that a "Dynasty Fuel Value" panel appeared in front of him that only he could see - the survival of Chang'an depended on the efficiency of the circulation of grain, coal, salt, and iron. Li Ran was forced into the whirlpool of intrigues and used modern concepts such as "zero inventory", "cold chain logistics" and "crowdsourcing transportation" to rebuild the material lifeline on the ruins. He has no soldiers and no power, so he uses "investment and shareholding" to win over businessmen, "data transparency" to win over people's hearts, and even "supply chain finance" to support the air force's salary. The opponents are the warlords entrenched in Guanzhong and the conservatives in the DPRK, who regard his "wonderful skills" as sorcery. Li Ran made comebacks in desperate situations again and again: when the warlords besieged the city, he relied on "unexpected preparations" to break the situation; when the food road was cut off, he turned decay into magic. But every victory made the old forces fight back crazier, and he had to face the ultimate choice of "save one person or save the city". In the end, he lit not only a fire in the hearth, but also a ray of light for people in troubled times.
