Taking preventive measures Building up the vital-Qi to resist pathogenic factors:endorsing eugenics,regular life, physical exercises,promoting mental health, herbs,artificial immunity Taking precautions against the invasion of pathogenic factors Taking preventive measures ◆ Building up the vital-Qi to resist pathogenic factors: endorsing eugenics, regular life, physical exercises, promoting mental health, herbs, artificial immunity ◆ Taking precautions against the invasion of pathogenic factors