Even if the protocol too, do not blame by others. Means the protocol is indispensable. "History of Civilization," the second time:, "I move something today, are not Yizu Why? Fortunately politeness costs nothing, and now they are inside Shangju very accommodating, not to mention me?" Guo "Tang Di flower" at three acts: "But I think that 'politeness costs nothing', the more polite Jun Hou, Qin Han diplomatic relations between the two countries will become more intimate."
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No. 2
Human multi-line etiquette, people will not blame.