The downpours in late July were triggered by Typhoon Gaemi, which moved on from the Philippines and Taiwan to make landfall in China, hitting the hilly, landlocked Hunan province particularly hard.
Last month, authorities in eastern China temporarily halted public transportation and evacuated roughly 300,000 residents.
Large storms have fallen across the east and south of China, and the northern has experienced sweltering heat waves once more.
A highway bridge collapsed as a result of heavy rainfall last month in the northeastern state of Shaanxi, killing at least 38 people.
China produces the most greenhouse gases in the world, which are responsible for climate change and increasing the frequency and intensity of severe conditions.