Group 1 - The announcement states that the Shanxi Provincial Taxation Bureau will unify all public contact numbers for tax-related services to a single number, "12366," effective from November 1 [8][9]. - This change aims to enhance convenience for taxpayers and the public in contacting tax authorities for various services, including information inquiries, complaints, and reporting tax violations [8]. Group 2 - The article emphasizes the importance of compliance for individual businesses, particularly regarding the issuance of VAT invoices, which must include detailed property addresses in the remarks section for rental properties [13].