Legal analysis: each line should be underlined to avoid adding other words. These instructions must be added to the scope of the ID card. The key contents such as the name and number of the ID card cannot be covered, but some strokes should cross or touch the contents of the ID card. Because the copy of ID card is usually black and white, it is better to write it with a blue ballpoint pen, which is more conspicuous. In addition, be sure to sign the copy of your ID card and write down the date of the day.

Legal basis: Article 3 of the People's Republic of China (PRC) Identity Card Law.

The items registered in the resident ID card include: name, gender, nationality, date of birth, permanent residence address, citizen ID number, photo of myself, validity period of the certificate and issuing authority.

Citizenship number is a unique and life-long identity code for every citizen, which is compiled by public security organs according to the national standard of citizenship number.