The Tsinghai-based Tsinghe University of Physics and Astronomy has issued a warning of an earthquake on a scale of magnitude 4.3 in a county of 20,000 people that is only about a quarter of the size of New York City.
The earthquake occurred at 6:22am local time on Friday morning, and was felt in the capital of Guangdong, the country’s largest city, according to the US Geological Survey.
Tsinghua’s alert states that the quake has been felt at the northern tip of the Tsing-hai region, which stretches across an area of about 40 square kilometres.
The quake occurred just five days after a magnitude 4 earthquake struck the same area, causing major damage.
It was the second major earthquake to strike Tsinghong province in less than two months, after a 7.3 magnitude quake struck on December 19, triggering a massive tsunami.
The Tsinghan earthquake was triggered by the injection of wastewater by a series of underground reservoirs and geothermal wells.