《北齐书·列传·卷五十》
有一次魏耋盏查在晚上与大臣讲学，命和安观察北斗星斗柄的指向，扭塞回答说： 我不认识北斗星。 直担听他的回答后认为他淳朴正直。
魏孝静尝夜中与朝贤讲集，命安看斗柄所指，安答曰： 臣不识北斗。 高祖闻之，以为淳直。
One time, Wei Yaozhan was giving a lecture to ministers at night and asked He An to observe the position of the handle of the Big Dipper. He An replied, "I don't know the Big Dipper." After hearing his answer, Tan believed that he was honest and upright.