The decline is the exam given by the market
Every time there is a decline, it is actually the market testing the mindset of investors. Are you panicking, observing, or daring to take the opportunity to lay out your strategy? Bottom-fishing seems to go against the trend, but often it best reflects a person's vision. Understand that a decline is not the end of the world, but an opportunity for repricing. Manage your positions well, don't be greedy, slowly accumulate, and when the market recovers, you will understand what it means that 'the decline is the future bought'.