The Sheep Bell Sounds in the Mountain Col tells the story of returning youth Ye Lan and sheep farmer Gao Mancang facing per-piece price cuts and forage waste. She teams up with technicians to conduct a ten-day trial feeding of twelve fattening sheep, checking ear tags, observing health, isolating abnormal sheep, and recording feeding costs. After weighing, bargaining, quarantine verification, and compliant transport, six sheep complete the first delivery. The team audits actual receipts and various expenses, avoiding blind expansion and instead relying on transparent accounts and standardized transactions to explore a path of aiding agriculture for the mountain village.