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2021 flood

On 20 July 2021, "The heaviest hour of rainfall ever reliably recorded in China crashed like a miles-wide waterfall over the city of Zhengzhou on July 20, killing at least 300 people, including 14 who drowned in a subway tunnel." Although an emergency alert was issued the day before the flood, businesses and subways remained open. From 4pm to 5pm on 21 July, 7.95 inches of rain fell. A collapsed retaining wall allowed water to pour into subway tunnels. "The Chinese government now appears to be acknowledging missteps by local officials, as well as the possibility that severe weather events will become increasingly common."