Market making is a necessary work of short-term trading technology. For domestic individual investors, they are very keen on this kind of transaction. For foreign mature trading markets and investors, the proportion of people adopting short-term technology is not high. The long line is gold and the short line is silver. This is their main investment philosophy. The bull market of American stocks in the past 30 years has cultivated and solidified their thinking.

In foreign investment markets, the proportion of institutional investors exceeds 90%, that is to say, foreigners basically entrust financial investment institutions to help them manage their finances, and the proportion of their own investment is very small.

From these two aspects, we can know that even if the trading time of external futures is long, the impact on external futures is not great, because they only use the investment method with long investment cycle, so they don't need to stare at the market. In addition, foreigners prefer to hand over their funds to institutional investors for investment, so they don't have to pay attention to the market trend or the length of the trading market.