One of the telltale signs: inconsistencies, such as when someone is telling you no and shaking his head yes, or saying he regrets something while using an unremorseful tone.

• 其中揭秘的迹象有：矛盾不一，比如一个人告诉你说不是却又点头，或者说他后悔某事却是用一种并非懊悔的口吻。