Actually, garbage is quite easy to catch. As long as the increase exceeds 2-3 times and there is stagnation or divergence, and the funding cost does not change much, you can establish a small position. If it goes up 15% plus 1%, ultimately reserving a margin ratio that can withstand a doubling of the increase, it's a way to leverage small investments!
Of course, I still urge everyone not to learn from me, not to trade contracts, as contracts can be harmful!