Over 260 police officers, soldiers and students present wreaths for martyrs in Tuquan county, Hinggan League, Inner Mongolia autonomous region on April 1. A series of commemorative events were held to salute fallen soldiers and policemen in Inner Mongolia during the Qingming Festival (Tomb Sweeping Day). [Photo/Hinggan Daily]

A police officer salutes fallen comrades in front of a commemorative monument in Hohhot, Inner Mongolia autonomous region on March 31. A series of commemorative events were held to salute fallen soldiers and policemen in Inner Mongolia during the Qingming Festival (Tomb Sweeping Day). [Photo/people.cn]