Group 1 - The article provides a detailed guide on the process of property tax and urban land use tax declaration, emphasizing the need for tax source information collection before filing [2][3][4] - Taxpayers must enter basic information such as property or land ownership certificate numbers during the tax source collection process [3][4] - For taxpayers with rental properties, specific information regarding rental income and property value must be accurately reported [3][4] Group 2 - The declaration and payment process is streamlined, allowing taxpayers to select multiple tax types for submission and confirm data before finalizing [6][8] - If there are errors in the declaration data, taxpayers are instructed to modify the tax source information before resubmitting [7] - A list of collected tax source information is available for viewing, modification, and deletion, with restrictions on deleting already declared sources [9]