On the first day of his exile in Nanhai, all that was left of his husband was Qiu Hou's head, and his entire possessions were a box of medicine, a hairpin, and a seven-year-old baby.
The guard cut off her with three swords - cut off her name, cut off her water, and disperse her heart. Shen Yu used fifty life and death certificates, thirty-seven volumes of medical books, and seven-eyed wells to sew this isolated island into his own plate.
Then she discovered that the phoenix hairpin passed down from her mother-in-law could "sing". There is half of the thirty-six tones hidden in the hairpin: a relay of conch horns, fishing fires, and whistles. The sound is faster than a knife, and the message is faster than a boat. With it, she built an invisible network - free clinics in exchange for purchasing agents, night flights on the black waterway, prescriptions hidden in cryptic words, and the entire island's salt, grain, and medicine information had to pass through her hands.