One level is prone to stillbirth. Several first level projects I invested in last year have already failed, some are still struggling, and I haven't received any coins yet. Second level short-term trading is very exciting during the volatile period, but once the upper ups increase their leverage, when the new trend reverses, it's like winning small and losing big. People have path dependence and inertia thinking, making it difficult to adjust strategies quickly and sensitively, unless it is a machine. The second level trend strategy, to put it bluntly, is to carry on relentlessly; to put it nicely, it is to be friends with time. Of course, the prerequisite must be when BTC and ETH have sufficient liquidity and a flood of water rushes in. And once you take garbage, no matter how the water rushes, it won't reach every corner...