In historical records,when Princess Wencheng went to Tibet(then a kingdom named Tubo), the king(Songtse'n Gampo) and his officers more than likely thought highly of the Tang court's attire and system of etiquette.The king himself imposed the Gaoshen system upon his subjects,with the system being the primary means for distinguishing rank and class.The general academic consensus is that this was a direct descendant of the Tang court's own way of doing much the same thing。