The taxpayer identification number is the number on the tax registration certificate, usually referred to as "tax number" for short, and the taxpayer identification number of each enterprise is unique. This digital code, which belongs to everyone and remains unchanged for life, is likely to become our second "ID card". 20 15 1 month 12, according to the "Revised Draft of the Law of the People's Republic of China on Tax Collection and Administration (Draft for Comment)" published by State Taxation Administration of The People's Republic of China this week, every citizen in the future may have a unique and lifelong digital code identification compiled by the tax authorities to confirm his identity.