Xinhua FTSE China A50 Index, referred to as A50 for short, was compiled by Xinhua FTSE Index Enterprise, based on July 2, 20031,and officially released to the public in June, 2004. A50 Index is an index composed of the top 50 qualified companies selected from the A-share market according to the compilation rules of Xinhua FTSE A-share index. The A50 index accounts for 33.2% of the circulating market value of the A-share market, and the FTSE Xinhua China A50 index is highly correlated with the SSE 50 index, belonging to a competitive index. Including China Unicom, China Merchants Bank, China Petrochemical, baoshan iron & steel, Shenzhen Development Bank, Yangtze Power, Shanghai Automotive and other large-cap stocks. Xinhua FTSE Index Co., Ltd. is compiled according to the needs of qualified foreign investors (QFII). Promote QFII's full participation in China A-share market. Before the introduction of A50 stock index futures, there was no such tool to hedge the crisis in the A-share market in China and even in the world, so when it was ready to be launched, it attracted great attention in the industry and objectively met the demand of QFII to hedge the crisis in the A-share market. QFII's investment in China A shares objectively needs hedging tools to hedge the crisis, because it has long been familiar with and accustomed to using derivatives rivals' chips to hedge the crisis when investing in developed markets. It should be said that the introduction of A50 stock index futures meets QFII's demand in this respect to a certain extent. With the help of hedging tools, QFII increased its holdings of A50 index heavyweights before the launch of A50 index futures. Because A50 stock index futures are listed on the new offshore exchange and are not restricted by domestic regulators, the regulators are worried. When trading stocks, you need to pay attention to the commission. Low cost can save a lot of money for our investment.