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Hello, this is Obreader. Tancheon is a river that flows from Yongin to Seongnam and to the Han River in Seoul. Since it is mostly surrounded by cities and has paved roads without a permeable layer and straight rivers, the water rises very quickly when it rains heavily. As the water rises quickly, the water also drains very quickly. Once the water floods and drains, creatures that were swept away by the water and came to the bike path or riverside park are in a difficult situation. You also encounter some very unexpected creatures. What kind of creatures can you meet in Tancheon after a flood? And why are they in danger?