A Y-20 large transport plane of the PLA Western Theatre Command sent rescue work teams to Lanzhou City after a magnitude-6.2 earthquake hit Jishishan County in northwest China's Gansu Province at a depth of 10 kilometers. Thousands of cotton tents, tens of thousands of cotton coats and quilts and other disaster relief supplies have been sent to the areas where the minimum temperature in the county will reach minus 10 degrees Celsius, according to local meteorological authorities.