Answer: Apart from general identification, the invoices printed by Changsha Local Taxation Bureau can be checked for authenticity in the following three ways: 1. Log on to the portal of Changsha Local Taxation Bureau, click "Tax Guide" on the homepage of the website, enter "Invoice Comparison", and enter the invoice code, number and amount as prompted to check. 2. For the invoice with serial prize password printed on the face, you can send SMS for authentication according to the method indicated on the back of the invoice. 3. Take the original invoice to the invoice management office of Changsha Local Taxation Bureau for identification.