In the first half of 1990s, Kan Zhidong, then president of securities, Guan Jinsheng, president of IWC, and Wei, general manager of Shanghai Stock Exchange, were called "three outstanding Shanghai securities". The "327 Treasury bond futures incident" dramatically changed their fate: Guan Jinsheng was jailed on charges of "disrupting the market" and Wei resigned due to oversight. On that occasion, Kan Zhidong was favored by luck. On the day of the incident, he was in Hongkong, and the manager of the self-operated department was afraid to short without authorization because he could not be contacted, so that Shen Yin escaped.

At the beginning of 2004, when Southern Securities was officially announced to be taken over, Kan Zhidong was psychologically prepared for his own fate, because Southern Securities had such a big hole after all, and as the president of the company, he might be implicated. When Kan Zhidong became the CEO of Southern Securities, he caused a sensation in the market, because in any case, he was a person with a "record".

10 years ago, Kan Zhidong was banned from the market for allegedly manipulating the share price of Lujiazui. Kan Zhidong later made a comeback and lost Southern Securities, even though he was suspected of manipulating the stock price. The difference is that Kan Zhidong suffered a five-year market ban last time, and he may face jail this time.

In 2002, after taking over Southern Securities, Kan Zhidong finally drew a very unsatisfactory end for his career. At this point, the first generation of the top ten domestic brokers declared that no one was spared, and the prediction that brokers are high-risk industries was once again verified.