Liu Zhiyuan, "Knowing the distance" comes from Zhuge Liang's Book of Commandments: "A gentleman's trip: cultivate one's morality by quietness and frugality. If you are not indifferent, you will have no ambition. If you are not quiet, you will not be far away. " Later generations further extended the meaning of "Zhiyuan" to lofty ideals, career ambitions and the pursuit of Excellence. Therefore, Zhiyuan here means "realizing lofty ideals and achieving career ambitions".