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Where did it come from all these years?
Keeping safe for many years comes from Sun Tzu's art of war of longevity and health care for the elderly. According to the related contents, Sun Tzu's Art of War Longevity/Keeping Peace with Years' Life is a book published by China Economic Publishing House in August, 1999, by Feng and Leng Dongmei. Keeping safe for many years comes from this book.