From the point of view of health preservation, Wu Guozhong's "Live to Heaven" is good, and Xu Wenbing's "Family Instructions of Huangdi Neijing" is also worth recommending. There are four books in China Baliren's series, which are clear and practical. In 2006, the old version of Manual for People was concise and easy to understand, but the revised version was evasive and pretentious.