A 5.8-magnitude earthquake struck Friday in Sichuan, the southwestern China province where a deadly earthquake killed tens of thousands of people in mid-May.
There were no initial reports of casualties.
The U.S. Geological Survey said the earthquake hit around 4:30 p.m. local time about 65 kilometres north of Mianyang, one of the hardest-hit cities in the May 12 quake.
State media Xinhua News Agency reported a slight tremor in the provincial capital of Chengdu.
Nearly 70,000 people died when a 7.9-magnitude earthquake hit Sichuan 2½ months ago. Another 18,000 are still missing and five million were left homeless.
While the province has had hundreds of aftershocks, most have been of low intensity.