"Move in with just your suitcase, cut construction costs by half, and relocate anytime" — Once used merely as temporary construction site housing, container homes are now emerging as a popular choice for personal living, commercial operations, and emergency accommodations in their new form as "prefabricated modular buildings." According to the "China Modular Construction Industry Development White Paper 2025" released by the China Academy of Building Research, the domestic modular construction market has reached 120 billion yuan, with the share of container products soaring from 28% in 2020 to 42%. Why is this "steel box" winning the favor of more and more people?