You can buy it online. Many second-hand teaching materials shops in Taobao, most of which are recycled from school students and then sold. It is usually very new, too.
Get second-hand books:
One is bought from a senior and a senior.
The second is the old bookstore around the school.
The third is the second-hand book website.
What you should pay attention to when buying books is: 1, publishing house. 2. editor-in-chief
The textbooks designated by general schools will not change, that is, the books used in a few years are the same as those used in previous years. Even if sometimes the textbook version changes, the publishing house is still the same. In fact, it doesn't matter if the version has changed, the essence is still the same, but some typesetting or a small amount of content has been modified, so you can use it with confidence.