When she woke up, Xu Qingjia, the youngest sericulture expert at the Academy of Agricultural Sciences, became a ten-year-old girl with a sallow complexion and thin skin, with her chest touching her back during the famine years in ancient times in the north. Good news: She is still alive, her parents love her, and her brothers and sisters respect her. Bad news: The whole family only had half a bag of chaff, and they were about to chew the bark of the tree. They were just one step away from starving to death. Looking at his hungry family and the barren land, Xu Qingjia gritted his teeth: Knowledge is power, technology is rations! Go south, to Jiangnan! There are water and fields there, three crops a year, and a climate that is most suitable for the growth of mulberry trees! Thus, a vigorous family migration began. Along the way, they fought against refugees who took advantage of the situation and evaded the officers and soldiers who imposed excessive taxes. They used their knowledge of botany to identify wild vegetables and fruits, and relied on a little cleverness to obtain survival rations. After arriving in Jiangnan, the real challenge has just begun. Dad: "Girl Jia, can we really grow mulberry trees in this piece of muddy land that no one wants?" Mom: "Silkworm babies are so valuable, can we keep them alive?" Elder brother: "Sister, no one in our family has ever done silk reeling in our lifetime..." Xu Qingjia rolled up his sleeves and showed a confident smile: Don't be afraid, just listen to me! From breeding mulberry seedlings and improving silkworm seeds to innovating spinning wheels and improving silk reeling techniques, she took one step at a time and turned the modern knowledge in her mind into the foundation for her livelihood. Who says women are inferior to men? Who said there is no way out for a mud-legged person? See how she, with her skillful hands, led her whole family to weave pieces of glorious silk and satin from scratch, and became a famous silk merchant in the south of the Yangtze River!