1 price. Wang Feng's memory books are cheap, and each book only needs 30 yuan, while Wei Li's memory books need 45 yuan, which is not cost-effective.

2. Function. Wang Feng's memory book has a detailed functional division, which is not very messy, and it has important important and difficult marks, while Wei Li's memory book has a scattered functional division, which can't grasp the important and difficult points. Wang Feng's memory books are better.