签 (qiān): ký tên của mình

The courier rang the doorbell and asked me to sign on the electronic pad to confirm I had received the package.

After the rental contract was signed, the landlord handed me the keys, and I moved in the next day.

Only after the doctor signed the prescription could I go to the pharmacy to get the medicine.

Before the competition started, every contestant had to sign their own name on the registration form.