Bottom fishing is the art of balancing risk and opportunity. In a downturn, risk and opportunity always coexist. What you need to do is not to rush in blindly, but to assess whether the market has overly reflected panic. If the price is below reasonable valuation and the fundamentals remain solid, you can gradually position yourself. Building positions in batches and leaving room is key to dealing with further declines. Bottom fishing is not gambling, but a carefully calculated investment action.