The Tangshan Earthquake also known as the Great Tangshan Earthquake, was a natural disaster that occurred on July 28, 1976.
It is believed to be the largest earthquake of the 20th century by death toll.
The epicenter of the earthquake was near Tangshan in Hebei, People's Republic of China, an industrial city with approximately one million inhabitants.
The number of deaths initially reported by the Chinese government was 655,000, but this number has since been revised to be around 255,000.
3. 1931 Yellow River flood
The 1931 Yellow River flood was a devastating disaster during which a land mass area of 88,000 sq km was completely wiped out by the flood plus an additional area of 21,000 sq km of partial flooding resulting in the numbers of between (approx.) 1-4 million human deaths in that region.
4. 1970 Bhola cyclone Bangladesh
The 1970 Bhola cyclone was a devastating tropical cyclone that struck East Pakistan (now Bangladesh) and India's West Bengal on November 12, 1970.
It was the deadliest tropical cyclone ever recorded, and one of the deadliest natural disasters in modern times.
Up to 500,000 people lost their lives in the storm, primarily as a result of the storm surge that flooded much of the low-lying islands of the Ganges Delta.
This cyclone was the sixth cyclonic storm of the 1970 North Indian Ocean cyclone season, and also the season's strongest, reaching a strength equivalent to a Category 5 hurricane.
