A prefabricated house is a new concept of environmentally friendly and economical housing that uses light steel as the skeleton, sandwich panels as the enclosure material, standard module series for spatial combination, and bolt connections for components.
The earliest form of activity houses was tents. A tent is a portable temporary accommodation that can provide shelter from wind, rain, and cold. Mainly used in military camping training and combat, it is also widely used in tourism, field investigations, and other fields. With the development of technology and the improvement of people's living standards, prefabricated houses have begun to replace tents in the public's vision. However, the term mobile housing gained widespread international recognition after the International Conference on Modern Architecture held in Brovnik, Yugoslavia in 1956. From then on, prefabricated houses truly became a form of architectural art and developed rapidly.
Activity houses, originating from the people and used in the military, were first widely used in the military and then promoted and applied in civil and temporary buildings. At the beginning, in the early stages of the war, foreign troops generally used tents as temporary accommodation and office spaces. With the passage of time and the development of war, relatively fixed field houses replaced tents. During World War II, each army had their own field houses. However, as the war continued to develop, such houses hindered the military's progress due to their poor mobility, thus urgently requiring the military to use lightweight and high-strength composite materials to develop and produce new types of battlefield activity rooms that can meet the needs. From then on, there were various military activity rooms.