Are there any books selling speculative futures in the bookstore?
There are so many bookstores around colleges and universities. If you are too lazy to run, you can go to Taobao, screen businesses in Beijing and mail them to your door. I'll be in the same city in a day or two, and it's cheaper than the bookstore, so I don't have to run. Those who have no online shopping experience can directly call cash on delivery. Xinhua bookstore doesn't have this thing.