Sun is a native of Qujiatun, Ningyuan Town, Bin County, Harbin City, Heilongjiang Province. June 20 13 graduated from the foreign languages department of Harbin Normal University, majoring in Polish. In the same month, Sun applied for a job online, and two human resources departments who claimed to be big enterprises in Dongguan telephoned him for an interview in Dongguan (in fact, it was a group organization). On July 1 day, Sun took the train from Harbin to Dongguan. When he arrived at his destination, he found that it was a pyramid scheme. Because he refused to join the organization, Sun was forced to receive training (brainwashing). After failing, he was put into a basin by pyramid schemes, beaten by a group, strangled his hyoid bone and kicked his spine. He died at 23 o'clock on July 6. According to the criminal suspect's confession, after obtaining Sun's work information online, the gang lied that they were the boss of a children's wear company in Dongguan, and they urgently needed talents like Sun, and used the monthly salary of four or five thousand yuan as bait until they were forced to participate in pyramid schemes. After being rejected, he was killed.