Speaking of Yin Shuangshuang, her current situation is actually quite good. Qinglin County was originally Great General Feng's territory, and because it's close to the border where military generals hold high status, Great General Feng has enormous power.
The Prefect above is one of his people, and although the Magistrate comes from an aristocratic family, with Great General Feng pressuring him, he can't cause much trouble.
Most of Yin Shuangshuang's neighbors are county magistrates who aren't from aristocratic families, so finding someone to cooperate with isn't difficult for her.
The fire wall is simple to build and easy to use; once ignited, even in the cold of winter, people can wear summer clothes indoors and not feel cold. It quickly became popular once spread.
Whether common people or wealthy families, everyone could afford to build it. The commoners, reluctant to use firewood, could warm up their homes by burning it while cooking, ensuring a warm winter.
