Henan province on Tuesday issued an orange alert for rainstorm, the second-highest level in the country's four-tier weather warning system.
From Monday to Tuesday morning, heavy downpours lashed many parts of the province, with a maximum precipitation of 638.5mm recorded in Sheqi County.
The province's meteorological observatory has forecast heavy rain to fall in some areas till 9am on Wednesday.
China's northern regions are bracing for extreme weather conditions. According to a meeting held on Monday by authorities including the State Flood Control and Drought Relief Headquarters and the Ministry of Emergency Management, the main rain belt is expected to move northwards in the coming days.
That will bring heavy rainfall to the Sichuan Basin and the Huanghuai region, encompassing parts of several provinces, including Henan, Anhui, Jiangsu and Shandong.
The Ministry of Emergency Management has ordered relevant provincial-level regions to focus on vulnerable areas, including flood-prone rivers and urban drainage systems. (Xinhua)