On July 27, as usual, it was still 37 degrees Celsius in Pingguo City, Baise, Guangxi, but Deng Shigan, the first-class police chief of Pingguo station police station of Nanning Public Security Department of Nanning Railway Public Security Bureau, did not slack off in his work. Under the scorching sun and heat, Deng Shigan and his colleagues stick to the front line of railway line security work every day, carry out on-duty inspections in key parts and key time periods under the jurisdiction, investigate potential safety hazards, and walk more than 10 kilometers a day to ensure the absolute safety of train operation. In 1998, Deng Shigan fell off a cliff more than 40 meters high and was seriously injured in the fight to arrest a suspect of a major theft case, resulting in a compressive fracture of the lumbar spine, which brought him permanent sequelae. In this battle, he was honored with personal first-class merit and was rated as "national excellent people's police". The police station once arranged for Deng Shigan to work in a relatively idle position, but he actively asked to work on the line with high work intensity. In order not to let low back pain delay his work, Deng Shigan wiped the medicinal wine every day to relieve the pain. For more than 20 years, Deng Shigan has supported the work in the police station and the poor family with his will. Although there are injuries, he is known as the "iron waist Sheriff". (the picture shows dengshigan (left) and his colleagues inspecting the railway line in hot weather.) (the picture shows Deng Shigan and his colleagues inspecting the railway line in hot weather.) (the picture shows Deng Shigan and his colleagues inspecting the railway line in hot weather.) (the picture shows Deng Shigan and his colleagues inspecting the railway line in hot weather.) (the picture shows Deng Shigan carrying out safety publicity to farmers around the railway line.) (the picture shows Deng Shigan and his colleagues inspecting the railway line in hot weather.) (the picture shows Deng Shigan and his colleagues inspecting the railway line in hot weather.) (the picture shows Deng Shigan drinking mung bean porridge to reduce the summer heat between work.) (Xinhua News Agency)