1. Confirm the integrity of the seal: the signature of the saddle seam can ensure the integrity of the sealing strip, indicating that the test paper is unopened and the seal is correct. Candidates can prove that the sealing strip has not been damaged or replaced by signing the riding seam.
2. Prevention of cheating: The signature of riding seam can prevent any form of cheating, and the sealing strip is damaged or replaced during the exam. The signature of riding seam helps to identify and prevent cheating.