According to common sense! Internal and external inventories should be balanced. Why is there a gap?

You misunderstood the concepts of outer disk and inner disk.

The outer disk is actively buying, and the inner disk is actively selling. How to understand it?

For example, A bids 5 yuan to buy and B bids 6 yuan to sell. In this case, A can't buy it and B can't sell it because there is no suitable price. At this time, C offered to sell in 5 yuan, so he made a deal with A, which was recorded as insider quotation. A is to bid 5 yuan to buy and wait for others to make a deal with him, and C is to bid 5 yuan to sell and make a deal. Because if C doesn't take the initiative to make a deal with A, even if it is entrusted for 10,000 years, his stock will not be traded.

If C offers 6 yuan to buy, he will make a deal with B, which will be recorded as an external offer. B is the first bid, 6 yuan sells and waits for others to make a deal with him, C is the first bid, 6 yuan buys and B makes a deal. ..

In other words, the outer disk and the inner disk do not refer to buyers and sellers, but refer to a transaction between buyers and sellers, which is only divided into active buying and active selling.