Real experts are long-term, and intraday trading is basically medium-skilled, because it is difficult to accurately tell the intraday market, and it is the trend of the formation of funds from all parties. If the futures market is too big and the market is not unilateral, it will fluctuate for seven or eight days in ten days, and short-term trading will not make big money. Those who really make a lot of money are long-term players, rubber 1.78 million to 42,000, copper 45,000 to 70,000. This is an expert.