A roll of 5 1 yuan a year. It seems that two volumes are 102 yuan.

This book is very suitable for middle-aged and elderly people. I think this book should be read when I am in my twenties, so that young people can have a certain understanding of some common health knowledge and they will live a healthier life. When they encounter some disease precursors, they will be treated as soon as possible.

In a word, this book is the best magazine at present.

If you have something better, let's share it!