Expandable houses are widely used in hotels, apartments, villas, shops, cafes, bars, restaurants, offices and other fields. The space can be large or small, the decoration would be luxurious and simple, the style would be set up according to the circumstances, the shape can be combined freely, the construction is fast, the mobile convenience and many other advantages are in sharp contrast with the traditional fixed buildings. It coincides with the demand for convenience, personalized living and commercial space in today's fast-paced lifestyle.