Group 1 - The article emphasizes the importance of timely tax declaration and reminders for individual income tax annual settlement, highlighting the deadlines for various submissions [5][7][11] - It outlines the process for setting up notification alerts in the personal income tax app for both Android and iOS systems, ensuring users do not miss important tax-related notifications [7][8] - The article provides a comprehensive list of reminders related to annual tax settlement, including special deductions and refund approvals, which are crucial for taxpayers to manage their tax obligations effectively [6][10][11] Group 2 - The article references the regulatory framework governing the annual tax settlement process, specifically the "Comprehensive Income Tax Settlement Management Measures" issued by the State Taxation Administration [7][11] - It discusses the significance of the personal income tax app in facilitating communication between taxpayers and tax authorities, particularly during the annual settlement period [5][9] - The article includes various scenarios and common issues related to special deductions, such as errors in spouse information for housing loan interest deductions, which taxpayers may encounter [11][13]