Last weekend, a powerful typhoon named Dolphin hit Shanghai. It brought record-breaking rain, very strong winds, and even small tornadoes. This was a big test for the city and its 25 million people. Shanghai is one of the largest cities in the world, and it had to show how well it could handle such extreme weather.
Typhoon Dolphin first landed in Zhejiang Province on Sunday. Then it moved toward Shanghai. The city government gave the highest-level red alert for rainstorms. This was the first time since 2013 that Shanghai had to do this. Strong winds blew for about two days, and several areas saw small tornadoes. In one area of Xuhui District, the rainfall in three days was 498.9 millimeters. That is more than half a meter of rain! At another weather station, the rain in just one day was 316.1 millimeters. This broke a record that had stood for 154 years.
The heavy rain caused many rivers and lakes to rise. Out of 45 water monitoring stations, 42 went past their warning levels. Also, 23 of them reached their highest water levels in history. The city's emergency services worked day and night. They helped people move to safe places and cleared water from the streets. Many schools and offices were closed to keep everyone safe.
This typhoon shows that big cities need to be ready for extreme weather. As the world's climate changes, storms like Dolphin may happen more often. Shanghai is learning from this experience. The city is working to improve its drainage (排水) systems and emergency plans. The full damage from the typhoon will be known by Saturday, but one thing is clear: Shanghai is strong, and its people are resilient (有韧性的).