The word "Kang" mainly means peace, happiness and health, and it also means praise and broadness. Thai means peace, tranquility and stability. Kangtai combination refers to calm personality, good-hearted, upright, determined, ambitious, healthy, safe and happy.
Q&A in Mandarin Guide Volume IV: "Your great emperor has always been a saint. 」
Refers to a person's physical condition is healthy, safe, stable and peaceful, full of energy; Moral cultivation shows positive vitality, calm and stable, and the feeling of taking it in stride.