In futures, the external market is a trading list in the form of selling, including selling and opening positions, which represents a lot of power. The inner disk is a trading list in the form of buying, including buying and opening positions and buying and closing positions, but it represents the strength of the empty side.

The large outer disk and the large inner disk on the disk surface show that many forces are dominant. But this has nothing to do with commission. The commission ratio represents the ratio of long and short orders at a certain price, and a positive number must be multiple orders at that price.

The above are some of its theoretical principles, but in the actual operation process, some minor changes need to be weighed and considered, such as the position difference between internal and external markets. Stocks should be easy to use, but do not rely entirely on these indicators for futures and spot. Consider reverse thinking when appropriate.