There is no need to change a large apartment for a small house of 55 square meters in a small city on the fifth line of Northeast China. According to the relevant public information, the pace and environment of life in the fifth-line small cities can use a small house of 55 square meters, and there is no need to change the small house of 55 square meters in the fifth-line small cities in Northeast China to a large apartment. Residential is a Chinese vocabulary, which refers to buildings for human habitation, social activities or other purposes.