In philosophic writings “Lao-tzu” , relationship between “Principles of Tian” and “Behaviors of Human Beings” can be expressed as: the reason why “Principles of Tian” and “Behaviors of Human Beings” can not combine into one is because “behaviors of human beings” do not yield. Therefore, if one wants to combine “principles of tian” and “behaviors of human beings” together, Chinese philosopher Lao-tzu believed that it can be done only when “behaviors of human beings” can follow the rules of “yield” and “not to compete” in “principles of tian”. Only if when “behaviors of human beings” follow “principles of tian”, then “tian” and “human beings” can return to the harmonious status in the ideal world.