Different trading goals lead to vastly different applicable methods and observation periods. For instance, in spot trading, you definitely wouldn't look at a five-minute candlestick chart to decide on buying or selling; you typically need to look at at least a four-hour chart or even higher, like a daily chart. At this point, you should consider what method you are using for spot trading. Do you have a mature trading system?

Now, looking at contract trading, what is your strategy? Which market cycle do you primarily refer to? If you have no clear approach, don't know when to go long or short, and are unclear about the trading cycle that suits you, then even with ample funds, it will be difficult to maintain a long-term presence in the market. Therefore, the true cost of trading is not the profit or loss of a single transaction, but rather the ongoing process of learning and improving trading cognition.