Worldview: The fictional dynasty "Jing Kingdom" is in a social form similar to that of the mid-Northern Song Dynasty - a budding commodity economy (there are markets and shops, but lack of standardized management), a mature imperial examination system, co-governance by imperial power and nobles, a hidden connection between the harem and the previous dynasty, a small number of nomadic tribes invading the border, and overall social stability but with the problem of class consolidation.
2. Protagonist setting: Ru Aixi, 26 years old before the time travel, was a project clerk at the leading domestic construction company "Dream Building Group", proficient in engineering data archiving, construction process docking, cost accounting (basic), CAD simple drawing, Excel data statistics, and pragmatic personality , has strong observation and resilience. Because she was knocked down by an out-of-control crane during a construction site material acceptance, she traveled to a ruined temple on the outskirts of the capital of Jing State, "Shangjing", and became the orphan "Su Ai" who had just lost her father and was kicked out of the house by her uncle and aunt (later adopted her real name "Ru Aixi" for convenience).
3. Application of core skills: building with modern
