The protagonist Lin Ye, a top business planner who is proficient in human nature and marketing, travels through the Qin Dynasty. He has no system, but his mobile phone (which starts with a full charge and no signal, but has an offline encyclopedia and a solar power bank) and the modern gadgets in his suitcase are his biggest cheats. He will not assassinate or rebel, but will use "commercial dimensionality reduction attacks" and "information asymmetry" to become the "national advisor" of Da Qin and build Da Qin into an unprecedented "Immortal Qin Commercial Empire".
