Yi Huiman, Chairman of China Securities Regulatory Commission. According to the Securities Inquiry Times, China Yi Huiman, Chairman of China Securities Regulatory Commission proposed in early September of 20021that quantitative trading and high-frequency trading in mature markets enhanced market liquidity and improved pricing efficiency, so China quantitative trading was proposed by Yi Huiman. Quantitative trading refers to the way of securities investment with the help of modern statistics, mathematics and computer technology.