Can letters be added to the name on the ID card (high score)

No.

"Resident Identity Card Law of the People's Republic of China"

Article 4 stipulates that "Resident ID cards should be filled in with standardized Chinese characters and numerical symbols that comply with national standards. Ethnic Autonomous Areas According to the actual conditions of the region, the autonomous organs may decide to use the characters of the ethnic groups that implement regional autonomy or choose a common local character for the content registered in Chinese characters on the resident ID card. ”

Our country’s legal language. The text is simplified Chinese characters, and national official documents must use simplified Chinese characters. Household registration and ID cards are documents issued by the state. They can only use simplified Chinese characters, not English. Ethnic minorities can use their own characters together with Chinese characters.