Group 1 - The article discusses the inclusion of immovable auxiliary equipment and supporting facilities in the property value for property tax assessment, emphasizing that these should be included regardless of their accounting treatment [4] - When replacing auxiliary equipment and facilities, the value of the original items can be deducted from the property value for tax purposes, while easily damaged parts that require frequent replacement are not included in the property value [4] - For rental properties with a rent-free period specified in the lease agreement, the property owner must still declare and pay property tax based on the property value during the rent-free period [6][7] Group 2 - Underground structures that serve a functional purpose, such as underground parking and storage, are subject to property tax if they meet the criteria of having a roof and maintenance structure [8] - Exempt units' self-used land is not subject to urban land use tax, but any land rented out must be declared and taxed accordingly [9]