Core Viewpoint - The article discusses the enhanced user experience for taxpayers using the newly launched electronic tax bureau and its app, particularly focusing on how to issue VAT invoices for self-produced and self-sold agricultural products [3]. Group 1: Electronic Tax Bureau Features - The electronic tax bureau and its app have improved the convenience for taxpayers, allowing them to issue invoices from home [3]. - The app provides a step-by-step guide for taxpayers to issue VAT invoices for self-produced agricultural products [5][6]. Group 2: Invoice Issuance Process - Step 1 involves clicking on "New Application for Invoice Issuance" and filling in the sales and purchase information, with the seller's information defaulting to the logged-in account [5]. - Step 2 requires confirming tax information and completing facial recognition authentication before submitting the application [6]. - After submission, users can preview, download, and share the issued invoices [6].