Multiple Loud Booms in Yancheng, Jiangsu Suspected to Be Sonic Booms; Official Announces Live-Fire Training

江苏盐城突发两声以上爆响疑似飞机音爆，爆响发生时窗户发生明显振动，路边汽车还触发了防盗报警；���前官方发布实弹射击训练告示

A public trend signal observed across 1 source.