The main force will make the car lighter through larger fluctuations, which is conducive to later operations. However, a long-term decline of more than 3 months is actually not in line with the manipulation wishes of large funds. This will cause most retail investors to leave the market, and the bull market atmosphere that has been formed with great difficulty will easily collapse. Therefore, the correction period of each round of bull market process is relatively short, making you lose money in this market but reluctant to leave this market.