On the first day of exam there were not such incidents. These are days of exodus for the Chinese parents. Many of them are traveling to the cities where the tests are given to stay with their children during two or three days. Only 6.5 million admissions are accepted. The most used methods to cheat the exam are: selling supposed answers, hiring surrogate test-takers and using wireless equipment to communicate during the test. Sometimes, a special pen that takes pictures of questions and transmits them to an outside accomplice who in turn provides answers via a secret earphone was used. 23 people had been arrested in China since late May over attempts to arrange cheating. At the same time, cage-lie anti-suicide barriers were installed to prevent students jumping to their deaths after knowing the exam’s results.