Introduction: People's language may lie, but the human body, which is very honest, some parts of our body and some actions, will unconsciously expose some of our inner thoughts. So if you want to distinguish a person from saying that he is not lying, don't just listen to what he says, be sure to see what he does, and even see if his body has some abnormal small actions, the following set of cartoons, you can teach you some small knowledge in this regard, you may wish to take a look at it.
Conclusion: People are a duplicitous creature, if you want to hide your inner thoughts, then you must be calm and control your own small actions.