After the much-anticipated ETF was approved on Thursday, the market did not usher in the market carnival as expected. Instead, it continued to sell off, from the highest of 49,000 to 41,300 last night, with an amplitude of 7,700 points.In the past two days, I have also observed that when the U.S. stock market opened, the market price immediately began to crash. After the U.S. stock market closed, the market experienced a slight rise. The logic of this should not be difficult to understand. Institutions and big players all want to get low-priced chips, and it is impossible to lift the sedan for those who entered the market at a low price in the early stage.Technically, it has already reached the lower support. If it breaks through with heavy volume, it cannot be ruled out that the market will continue to follow the weekly level retracement, which is the previously hyped rally level of 29,000-31,000. At that time, the main institutions will enter the market and sweep away the chips. What needs to be paid attention to in the near future is the gains and losses of 40,000.The market does not fluctuate much over the weekend. In terms of operation, sell high and buy low at 44000-42000. The time points to pay attention to are tomorrow night and early Monday morning. As the market opens, the market volatility will increase.