Summary of Key Points
The National College Entrance Examination (Gaokao) is not only a major test for the candidates but also a comprehensive assessment for various industries, including security, logistics, communications, and image recognition. From the highly secure printing of examination papers to the entire journey of their transportation, to the signal suppression in the examination rooms and the multi-layered surveillance by invigilators, and finally to the double-blind grading process with intelligent quality control, the entire procedure is equipped with stringent measures. This combination of “algorithms, sensors, and digital platforms” forms an impenetrable defense system that eliminates the possibility of cheating.
Detailed Explanation
1. Paper Printing: A “Secret Base” More Secure than a Prison
Although not all Gaokao papers are printed in prisons, the security standards are definitely on par with those of a prison. Facilities capable of printing these papers must have the necessary national security qualifications. Some prisons are selected due to their high level of confidentiality. Regardless of where they are printed, the security measures are equally strict:
- Confined Living: Staff members must live there for several weeks without being allowed to leave.
- Physical Protection: The plant is surrounded by high walls and electric fences; windows have double-layered iron mesh (to prevent people, drones, and even pigeons from entering). Waste pipes are fitted with additional layers of iron mesh to prevent the leakage of exam questions. Domestic waste must be crushed into powder before being disposed of.
- Signal Isolation: Mobile phones are collected upon entry; the entire plant is a signal-free zone, and powerful interference devices are in operation—during those weeks, employees can only “reflect on their mistakes” without access to communication.
2. Paper Transportation: Like Transporting Cash, but with Extra Security
The secure boxes containing the papers are treated with the same level of protection as cash transports:
- Beidou Navigation: Vehicles are equipped with Beidou navigation systems, and pre-set routes are followed. If they deviate from the designated path or stop improperly, the command center is immediately alerted.
- Real-Time Monitoring: Cameras inside the vehicles transmit images of the sealed boxes and the status of the escorts to the provincial command center, providing constant surveillance.
- Relay at Examination Sites: Upon arrival at the sites, the secure boxes are monitored 24/7 by the national examination security system. Even minor issues, such as a driver’s illness, must be reported in advance to avoid any disruptions.
3. The “Signal War” in the Examination Rooms: Mobile Phones Become Useless
Before entering the examination room, candidates must pass through a security check:
- Intelligent Security Gates: These gates can now distinguish between keys, mobile phones, and smartwatches, preventing electronic devices from being brought in.
- Signal Suppressors: Signal suppressors are activated throughout the exam period. Instead of simply cutting off internet connections, they emit interference across all communication frequencies (2G to 5G, Wi-Fi). This means that mobile phones cannot receive signals from base stations and appear to be out of service.
- Impact on the Surrounding Area: The range of this interference can sometimes extend beyond the examination rooms; delivery drivers may experience issues with their navigation, and residents in nearby areas might find their Wi-Fi networks affected.
4. More Than Just Two Invigilators: Cameras and Algorithms Are Also Watching
The “eyes” in the examination rooms are not limited to the teachers at the front of the desks:
- Online Monitoring Systems: Classroom cameras transmit images in real-time to various command centers, and intelligent algorithms are used to detect any suspicious behavior (such as looking around or passing notes), prompting manual reviews.
- **“Invisible Invigilators”: During an exam, dozens of people may be monitoring candidates through screens—don’t think the teachers are the only ones watching. There are also “electronic eyes” at work.
5. Grading: High-Tech Processing and Double-Blind Methods to Prevent Cheating
The collected answer sheets undergo advanced processing:
- Scanning and Fragmentation: High-speed scanners convert the answer sheets into digital images, which can also be used to correct errors and read barcodes. The system then divides each sheet into individual question segments so that the grader can only see the content of their assigned question (e.g., only Question 18).
- Double-Blind Grading: Each question is randomly assigned to two graders, who score it independently. If there is a significant discrepancy in scores (e.g., more than 2 points), a third grader or a team leader will be involved in the review process.
- Intelligent Quality Control: Algorithms monitor the grading process; if a grader completes a paper too quickly or if scores remain stagnant at a certain level, the system alerts the team leader to prevent potential cheating.
In Plain Language
The Gaokao’s security system is like an airtight net that eliminates any loopholes for cheating, from the printing of papers to the grading process. For most candidates, the most stressful aspect might not be the technology itself but rather the need to wear trousers with metal zippers—should they borrow a guard’s pants? (laughs) However, it is precisely these strict measures that ensure the fairness of the exam, giving every hardworking candidate a fair chance.