Tool: mobile phone.

1. Pay attention to the official WeChat account, the original.

2. Click "Book Purchase Service" on the official account of "Yuanchuang Book" WeChat.

3. Select "Online Mall".

4. Click "Buy Now".

Yuanchuang Thinking Volume is a product developed by Dalian Yuanchuang Education Technology Co., Ltd., which takes "learning knowledge, improving ability and solving problems" as the core concept and "tutorials, exercise books and evaluation forms" as the carrier.