Today, there was suddenly a spike causing a liquidation (there's nothing that can't be said, mistakes need to be acknowledged, and when facing consequences, one should stand straight). Last time when Bitcoin spiked to 90,500, I was in a short position and successfully took profits. I don't have much deep feeling towards spikes. But this time, I felt the market was very stable, and the drop wouldn't be significant, so I didn't set a stop-loss, fearing that hitting the stop-loss would cause unnecessary losses. After all, generally speaking, costs can be reduced through trading, and this process can even yield a small profit. However, this time during the spike, I was in a long position and truly experienced the terror of spikes.

Lessons learned: Since I decided to operate with a divided position for safety reasons (dividing the total position into five parts and only placing one part in the contract, this way there are five opportunities, and even if one fails, there’s a chance to operate again, as long as one succeeds, it can recover the losses), but at that time, the market was in a downtrend, and I thought it was a good opportunity to buy the dip, so I heavily increased my position and moved funds from other divided positions, leading to a situation where it was difficult to recover after one failure. Now I only have one position's funds left, and in the future, I must strictly adhere to stop-losses (I have always known this, but I always greedily aimed to avoid even a little loss from the stop-loss; this time I was truly taught a lesson by the market, and I hope I can learn from it).