Old-school AltCoins can be roughly divided into two categories:

1. Trending (with sustained upward movement): These types of currencies have a steady increase in price with multiple fluctuations, providing opportunities to repeatedly enter a position. They are suitable for trend-following strategies.
2. Explosive (rapid rise in the short term): The price of these currencies tends to rise rapidly in a very short period of time, usually with dramatic Fluctuation, lacking mid-term adjustments, almost no opportunity to get on board midway, and can only chase rising prices through breakthroughs.