2 What are the tasks of Frontier Defense Inspection? Frontier Defense Inspection Stations are an examination and administration organ for border entry and exit. Their tasks are to safeguard the sovereignty of the People's Republic of China,maintain its security and public order,facilitate international exchange,and examine and administer passports,certificates and means of transport of all persons who enter or leave the country.8 2 What are the tasks of Frontier Defense Inspection? Frontier Defense Inspection Stations are an examination and administration organ for border entry and exit. Their tasks are to safeguard the sovereignty of the People’s Republic of China, maintain its security and public order, facilitate international exchange, and examine and administer passports, certificates and means of transport of all persons who enter or leave the country