First of all, teaching materials, some designated teaching materials, such as a course in a class of a school, are designated by a school to be published by a publishing house. Some teaching materials are biased and may not be available online, while some bookstores will ask parents, and then bookstores will order from the publishing house. In addition, not every book is published by a publishing house, and some teaching materials are distributed by provincial agents. This kind of teaching material through channels is rare on the Internet.

Secondly, I have met some teachers who will assign students reading materials, such as Arabian Nights, and which publishing house it was published in that year, but it is possible that this edition has not been a bestseller for several years. At this time, there are naturally not many books online, and bookstores are like Xinhua Bookstore.

Xinhua Bookstore at the city level has policy requirements, and there will be records of the book, which may be in stock, and more can only be ordered by the publishing house. In fact, sometimes teachers don't know much about the current situation of book publishing. Generally speaking, a book has a limited sales cycle and a short life cycle.

There are many versions of world famous works. Some teachers choose the cheap version instead of the classic version when buying, which is easy to be out of stock. For example, you can find hundreds of versions of Romance of the Three Kingdoms. If the teacher specifies non-bestsellers, it will be difficult! Of course, it does not rule out that some teachers will have contact with some bookstores with no bottom line.

Of course, for example, in bookstores near the university, bookstores basically know what courses to offer in a certain semester, so every time the school starts, bookstores will buy textbooks for this major, and then teachers will let students buy them. The most important thing is that the publishing house has requirements for the flow of teaching materials. For example, if a bookstore wants to order a textbook, it needs to indicate which school is using it.

Summarized as follows:

When encountering a special book, it needs the seal of the demanding unit. For example, there are as many textbooks in police schools as there are stamped documents. Do you think this kind of book will be sent to Dangdang Tmall? For example, in an accounting exam in Guangdong province in a certain year, only customers in Guangdong province are required. The probability of online shopping is very low, but there is a wonderful one.

The leader of a unit compiled a book, published it in the same system publishing house, and then asked people in this unit in the province to buy it, telling them that there was training content in it. Where can I buy it?