Geoje recorded 654 millimetres of rainfall over one day. The figure is comparable to the record rainfall of Typhoon Rusa in 2002, and because it fell in a short window, the pattern of damage was similar as well.

Landslides and flooding occurred at once. One resident said they saw a person buried under mud but could not reach them. With roads cut and power and water out, rescue and repair work were delayed simultaneously.

The defining feature of this rainfall was intensity rather than total volume. When hourly rates exceed what drainage was designed for, low-lying ground floods immediately. On slopes, collapse begins the moment soil passes its water-holding limit — and that threshold arrives far sooner as intensity rises.

The heat returned as soon as the water began to drain. When temperatures climb before soaked building materials and appliances can dry, sanitation risks and heat illness rise together. This is why summer disasters in Korea are said not to arrive one at a time.

The southern region has spent this summer alternating between heat that restricts movement and rain that severs roads. Both produce isolation, but the responses are opposites: heat keeps people indoors, while flooding makes indoors unsafe.

For Chinese households in Korea there is a practical dimension. Where disaster alerts and evacuation guidance are delivered mainly in Korean, information arrives late. It is one reason local Chinese associations and schools have long maintained their own contact networks.

Recovery brings its own paperwork. Tenants, small business owners and residents on different visa statuses qualify for different categories of support, so it is safest to check both the local government desk and any multilingual guidance available.