Stampedes aren't uncommon in China, a country of 1.3 billion people. Authorities in recent years have taken steps that include training for school personnel and banning limited-time sales promotions at stores in an effort to curb them. Some tragic incidents from recent years:

November 2014 -- An earthquake caused a panicked rush at a school in Tagong in Sichuan province, injuring 42 children. September 2014 -- Six students were killed and 26 injured at a school in Kunming in China's Yunnan province after they tripped over a cushion and were trapped under the feet of other children. Seven people were suspended...