Who invented safety?

Security is the name of a new service industry under the development of industrial and commercial society. They are called security guards in China and "private security companies in the private security industry" in the United States. Japan calls it "guarding society". In ancient times, China was called a personal bodyguard, such as an exhibition guard in Bao Qingtian and an escort agency to deliver property to clients. Security refers to people who defend public safety, prevent personal accidents in the production process and engage in security work. Bao 'an (1045-1052) was the title of Duan Silian, the emperor of Dali, for 8 years. Security was a military name in ancient China. In the second year of Xingguo in Song Taiping (AD 977), it was changed to Yanzhou (now Yan 'an, Shaanxi) and Yongkang Town. Governance is now Zhidan, Shaanxi. In the 11th year of Jin Dading (1 17 1), it was changed to county. Song dynasty is the gateway to the northwest of Yanzhou, the main traffic artery and the important frontier defense town of Xixia. In the second year of Baoyuan (1039), Zhao Yuanhao attacked Song in the summer and was defeated by Di Qing. During the Song and Xia Dynasties, in times of peace, a market was set up here to trade tea and horses. 2 security categories and responsibilities Edit mall security