Sticking a bar code on the answer sheet is the marking area recognized by the computer.

Posting a bar code on the answer sheet is an area identified by a computer mark. In 2023, the national postgraduate entrance examination will implement computer marking for self-proposition subjects. In order to do a good job of computer marking, candidates are required to stick their own barcodes on the answer sheet before the exam. The examination room will issue a self-proposition answer card with a bar code paste area in the upper left corner and a serial number. At the same time, each student will get an examination envelope with the bar code of the answer sheet.