It is a science that studies the nature and laws of war and should guide the preparation and implementation of war. .

2. Civil air defense publicity and education:

It is an important part of national defense education and patriotism education. Professional education includes residents' air defense knowledge education, middle school students' air defense knowledge education, civil defense professional team training and civil defense cadres' professional training.

. The purpose of education is to enhance citizens' awareness of civil air defense and cultivate civil air defense professionals.

3. National defense:

It is national defense, which refers to the military and military-related political, diplomatic, economic and cultural aspects to defend national sovereignty and territorial integrity and resist foreign aggression and subversion.

Construction and struggle.

4. Three forces:

The so-called three forces refer to violent terrorist forces, ethnic separatist forces and religious extremist forces.