*She changes the world, but no one knows her name. **
Zhou Yu, an ordinary person with a tenacious soul and diligent hands, is bound to a "most useless" system: no tasks, no punishment, no communication, and only provides the most basic travel and storage. System energy? Rely on the value she created with her own hands - those "positive ripples" that improve people's livelihood and promote progress. She never gets close to the protagonist group at the center of the storm, and only immerses herself in the fields, craftsmen's workshops, and corners of the market. Improving agricultural tools, promoting textile technology, solving epidemic diseases and water sources... The fruits of ten years of hard work and sweat were like sparks of fire that started a prairie fire after she quietly left, benefiting all people. When the legend finally came out and the protagonists were chasing the traces of the "Hidden Master", Zhou Yu had already rushed to the next world that needed "stupid kung fu" with full energy.