The Technical Essentials of Healthy Housing Construction, edited by the National Housing and Living Environment Engineering Center, points out that the net height of the living room should not be less than 2.5 meters; In the "Modular Coordination Standard for Residential Buildings" edited by the Ministry of Construction, it is stipulated that the height priority size series is 2.0-3.0 meters; The Code for Residential Design stipulates that the height of ordinary residential buildings should be 2.80 meters.