In May 2008, the procuratorate prosecuted the case. According to Caijing, Dong Zhengqing admitted that he took advantage of his position during his detention to inform his brother Dong Dewei in advance of the news that GF Securities borrowed Yanbian Highway. Dong Dewei invested tens of millions of yuan in Yanbian Highway and made a profit of more than 40 million yuan. At the same time, Dong Zhengqing's college classmate Zhao Shuya also made a profit of 1 10,000 yuan. 1993, Dong Zhengqing entered the securities department of Guangfa Bank, the predecessor of Guangfa Securities, which was established only two years ago, and was promoted from the manager of investment banking department to the president. He once led the team "northward" to develop business, and expanded Guangfa's business to the whole country, creating a distribution method of "full subscription and refund of the balance" that has been prevailing in the industry at present. During his tenure as vice president, he led the expansion of GF Securities in different places and acquired several business departments to realize the large-scale development of GF Securities. In his strategic concept of internationalization of GF Securities, backdoor listing is the most critical step, and he will be jailed for this step.