The Unlucky Siblings Bound the Wrong Systems, Season 3

Siblings Gu Mingli and Gu Mingyue unexpectedly travel into ancient times and become the son and daughter of the reigning chancellor, only to bind mismatched systems. The sister, who has a head for finance, is tasked with scattering the family's savings and must spend the fortune to protect herself; the brother, with a science-and-technology background, is charged with keeping the clan secure and so stays close to the ruler to win his favor. Their father is skilled at managing the family's estates, and the household's stores are rich and keep growing. The siblings can only recruit townsfolk, build roads, and aid refugees from the mountains and wilds to drain the wealth, yet the family assets pile up even faster. The two sigh helplessly: Father, stop expanding the family business—we truly cannot spend it all.