A 5.4-magnitude earthquake hit a county of northwest China's Xinjiang Uygur Autonomous Region at 10:14 a.m. on Tuesday (Beijing Time), according to the China Earthquake Networks Center.The epicenter, with a depth of 11 km, was monitored at about 36.1 degrees north latitude and 82.4 degrees east longitude, Xinhua quoted the center as saying in a statement.The quake jolted the region's Yutian County in the prefecture of Hotan, which is located in the Kunlun Mountains, according to the county government. Some residents of Yutian and the neighboring Minfeng County reported feeling a slight tremor, said the government. No casualties have been reported thus far.Local officials and staff of the seismological bureau are heading to the quake-stricken area. According to the center, another 3.7-magnitude quake with a depth of 9 km jolted the same county three minutes later