Blushing, one hand kept touching the other.
The calligraphy test requires candidates to sit upright and look focused. When they are nervous, their faces will turn red, they don’t know where to put their hands, their palms will be cold, and they will make some body movements on their own, such as if their hands are not moving Stop touching your other hand and wait.
Stress is the strengthening of the human body's mental and physical responses to external things.