Some people can not practise qigong, and become frightened simply because of this. One normally chooses to practise qigong in a quiet environment at night. Seeing a person standing in front of him who looks half demon and half human, one would be too scared to continue the practice. Generally, there is not such a phenomenon in our Falun Dafa. However, there are still a few exceptions.
Some people have extremely special situations.
There is another kind of people who practise a cultivation way which cultivates both the interior and the exterior. Such cultivation ways are commonly seen in the Tao School. Once a person learns such a cultivation way, he will often run into such a demon, which other cultivation ways would not normally encounter except for the cultivation ways that include interior and exterior cultivation, as well as Martial Arts. The practitioner will be challenged to a fight since there are many Taoist practitioners in the world, many of whom practise Martial Arts and the interior and exterior cultivation ways. A person practising Martial Arts could also increase his cultivation energy.