Affected by the combined impact of the residual vortex of a South China Sea tropical depression and cold air, Hainan has experienced persistent extreme heavy rainfall since September 11, 2026. Rainstorm warnings have been upgraded in many areas, with severe waterlogging and rising river levels. External traffic arteries in Wuzhishan City have been completely cut off, with only emergency rescue vehicles allowed to pass, and floods have caused heavy losses to local farmers.