Some people are curious about when to buy the bottom. The basic version of the time opening theory can achieve dimensionality reduction. The only thing you can rely on in this game is time. It fell from 8 o'clock yesterday morning, rebounded to 9 o'clock this morning and continued to fall. Then the first bottom-picking rebound time point will be around 8 to 10 o'clock in the evening. But it is just a rebound. Why is it not sure at which specific point? Because there is a high probability that the second bottom will continue to oscillate around 8 o'clock in the evening. The real rebound time will be reflected in the market when the rebound is obtained. Be patient and wait to make big profits.