All major Xinhua bookstores should sell the first three kinds. You can also buy it online, which is cheaper than buying it in a physical bookstore. It is suggested that both Dangdang and Joyo support cash on delivery, and there will be no big risk.
In addition, Joyo. Com is holding an activity recently, and the delivery fee is free. You might as well try it, thank you.
Wish you good health. Although I have only seen "Self-control of Illness", I like it very much. But there is something wrong with the punctuation in the book. Haha ~