Operation method
When speaking, it is very likely that you are lying if your eyes glance to the left and up unconsciously.
The sudden acceleration of speaking speed may be caused by the untruthfulness of the previous words.
Sometimes when you are nervous, you will unconsciously grab the corner of your clothes or put your hand in your pants pocket.
When the other party makes a hasty decision, it must be that he is not sure about the matter and wants to make it happen, leaving him no choice.