Abstract: Mountainous rural distribution lines commonly run through mountain forests, along village roads, and through villages. After a typhoon warning is issued, only limited time remains for line patrols, tree-hazard clearance, and customer-side inspections. This paper uses the response to Typhoon Bavi, the ninth typhoon of 2026, in the Maoshan area of Jintan as a case. It summarizes the pre-typhoon preparedness and field response practices of the local power supply office for three categories of field targets: line corridors, key public-service customers, and operational anomalies. Pre-event activities include patrols of 37 lines, 47 staff deployments for field inspections, coordinated clearance of hazards involving 2,012 trees, and electricity-use inspections at the Shima Drainage Station and the Xuebu Huashan Nursing Home. During the event, personnel maintain duty coverage and emergency standby and record 362 internal "2222" repair requests, 22 "95598" work orders, and 171 proactive work orders. Field checks cover 22 distribution station areas with frequent tripping, while the network records three trips on 10 kV lines and one ground fault. The case indicates that local typhoon preparedness in mountainous areas should prioritize line corridor clearance and inspections of key customers because these tasks become difficult to perform safely in strong winds and rain. Tree-hazard mitigation requires coordinated and clearly divided responsibilities between power utility personnel and local authorities. During the typhoon, field inspections should focus on lines and distribution station areas with recurring abnormalities. These practices direct the limited preparation time toward specific operational targets and provide a reference for typhoon preparedness in similar mountainous rural distribution networks.