In the concept of inner disk and outer disk, the unit is usually (hand). Inner disk and outer disk are commonly used trading terms in financial markets, mainly used in stock, futures, foreign exchange and other markets.

InternalMarket refers to the number of transactions such as stocks and futures at the purchase price (that is, the selling price submitted by the seller). The size of the inner disk reflects the strength of the seller. When the inner disk is large, it means that the seller is more active and the market pressure is greater.

ExternalMarket refers to the number of transactions such as stocks and futures at the selling price (that is, the buying price submitted by the buyer). The size of the outer disk reflects the strength of the buyer. When the external market is large, it means that the buyer is more active and the market has support.

It should be noted that the size of the inner disk and the outer disk is not absolute, and it needs to be comprehensively analyzed in combination with factors such as market environment, trading varieties and volume. While observing the inner disk and the outer disk, we can also pay attention to the volume, transaction price and other indicators in order to judge the market trend more accurately.