Code ocean refers to the words used by book publishing and distribution departments to refer to the total price of all books. Every book has a price list consisting of Arabic numerals (yards) and monetary units (foreign currencies), and the total price of their multiplication is called foreign currencies.

In fact, it refers to the discount price given by book publishers to the lower limit agents in the book industry. There are two kinds: the sale is real, which is the discount price at the time of sale; The purchase price is the discount price when wholesalers or retailers purchase goods. Truth is the premise and basis for the distribution department to calculate profits and losses.

Generally speaking, the code is the original price of the book, and the actual price is the actual sales price or purchase price.