Twenty-eight-year-old Li Chunmei returned to Qingshan Village after losing her job, intending to sell the dilapidated pig farm left by her grandfather. While cleaning the pigsty, she discovered a lame and slow-growing black pig. Everyone in the village said it was a "useless pig" and advised her to sell it quickly and stop wasting feed. However, Chunmei discovered from her grandfather's breeding notes that this pig was not without value, just unsuited for fast fattening. She decided to keep it, learning her grandfather's fermented feed and slow-raising methods. Over three months, she repaired the pigsty, learned feed formulation, ran the market, and gradually understood her grandfather's lifelong silent persistence.