Hundreds of residents in southwest China’s Chengdu City of Sichuan Province lined up to donate blood, after a M7.0 earthquake struck Jiuzhaigou County late Tuesday. /Chengdu Blood Center Photo

One day after the quake, 13 locations have been set up across the city for residents to donate blood for the injured. /Chengdu Blood Center Photo

According to Chengdu Blood Center, more than 1,000 people visited the blood donation centers. /Chengdu Blood Center Photo

The earthquake left at least 19 people killed and 343 injured, while more than 47,000 tourists have been evacuated. /Chengdu Blood Center Photo