/tə saɪn ɪn blæŋk/ – Phrase
Definition: ký khống, ký giấy khống chỉ.
A more thorough explanation: “To sign in blank” refers to the act of signing a document without specifying the details or information that should be filled in later. This practice is generally discouraged as it can lead to potential misuse or fraud.
Example: It is illegal for a person to sign a contract in blank, as it leaves the document open to potential abuse or fraud.