BEIJING, May 21 (Xinhua) -- A 6.4-magnitude earthquake jolted Yangbi Yi Autonomous County in southwest China's Yunnan Province at 9:48 p.m. (Beijing Time), according to the China Earthquake Networks Center (CENC).

The epicenter was monitored at 25.67 degrees north latitude and 99.87 degrees east longitude, at a depth of 8 km, the center said.