What impact does heavy rain in Zhengzhou have on local traffic?

Yesterday (20th) evening, the China Meteorological Administration announced that since July 17, there have been persistent heavy rainfalls in Henan Province and heavy rains have occurred in many places. More than 600 stations have received more than 250 millimeters of rainfall, with the maximum rainfall The amount of rainfall was 728 mm, and Zhengzhou’s rainfall was 382 mm in 6 hours. Among them, the rainfall exceeded 200 mm in one hour from 16:00 to 17:00 on the 20th. The Central Meteorological Observatory stated that the maximum hourly rainfall of this extremely heavy rainfall in Zhengzhou was 201.9 mm, which exceeded the "758 heavy rainstorm". The historical record was the 1-hour rainfall in Linzhuang, Henan (198.5 mm, August 5, 1975);

On the railway, due to the heavy rainfall in recent days, many trains were suspended or turned back. According to the China Railway Zhengzhou Bureau, on July 20, continuous heavy rainfall caused the normal-speed Longhai Line, Jiaoliu Line, Ningxi Line, Beijing-Guangzhou Line, Taijiao Line, Zhengxi High-speed Railway, Zhengtai-Taiwan High-speed Railway, Zhengzhou-Taiji High-speed Railway, and Some sections of Xuzhou High-speed Railway are blocked or run at limited speeds. K736/7, K177, K32/29, K1144/1, T197, K8002, and K1757 trains are suspended. 15 trains including K117, Z376/7, and T9 are turning back. Zhengxi Some high-speed trains will be suspended or turned back, and trains on the Zhengzhou-Taizhou and Zhengzhou-Xuzhou high-speed trains will be delayed to varying degrees.