Four factors Constituting Friendly Tang-Tubo Relations

摘要

＜正＞ During the 200 or more years of Tang-Tubo bila-teral relations,and despite the wars that often occurredowing to conflict between the ruling classes of eachside,harmony and friendliness nevertheless prevailed.So what were the reasons behind this friendly Tang-Tubo relationship?This article attempts to generalizefour factors and briefly discuss each one.