1. If there is a long-short balance in futures trading, even if the trading volume is huge, the negative line or the positive line is not necessarily large, because the buyer's bill is accepted by the seller and the selling order is accepted by the buyer, so even if the trading volume is large, the price may be small, which shows that the trading volume is huge, but the negative line or the positive line is small.

2. If the overall balance is unbalanced, there will be a small positive line or a small negative line with a long upper and lower shadow lines, that is, if it rises much, it will attract more sellers, and if it falls much, it will attract more buyers, so it will eventually present a small positive line or a small negative line with a long upper and lower shadow lines.

3. If the long and short power is unbalanced, the buyer's power is far greater than the seller's power, or the seller's power is far greater than the buyer's power, then there will be a big Yang line or a big Yin line, and the market will show a one-sided trend, which corresponds to a huge turnover and a huge market trend.

4. If the transaction volume is relatively small, it will basically present a small Yang line or a small Yin line, and there are very few transactions corresponding to the trend of the big Yang line or the big Yin line, which means that a large transaction volume does not necessarily correspond to the big Yang line or the big Yin line, and most of the smaller transactions correspond to the small Yin line or the small Yin line, with very few exceptions.