As long as you make sure to sell while rising, and sell small amounts one by one, your mentality will not be greatly affected. If the market goes up deterministically later, we can just look for opportunities to buy again. Just like last night's TIA is a buying opportunity with relatively high certainty. If you buy it, you will make money this morning. So don't be afraid of rising prices, and don't be afraid of going short after selling. For us, there are only two situations in which we can understand the market and cannot understand it. We understand that it is likely to fall, so we sell according to the plan. Even if it doesn't fall later but rises instead, we still have many opportunities to get back on the train. At the very least, we ensure the safety of the principal, and then add the deterministic profits of deterministic trading opportunities. This ensures that we can make stable profits. We understand that TIA is likely to rise, so just buy it. Then, the size of the buying position is determined based on the difficulty of the market and risk tolerance. As long as you only deal with market trends that you can understand, there is a logical chain for buying and selling. Then stable profits will come naturally.