Spot, buy at a low price, replenish margin, hold on, those who don't replenish margin are all bearish traders in the contract gambling army, they have all replenished margin, what can they eat when it rises! Don't catch the bottom when it's falling, do you want to chase rising prices? If you don't dare to catch the bottom now, would you dare to catch the bottom even if it falls further? When the upward trend starts and you chase it, will the price be lower than it is now?