If the factor of hallucination is excluded, it is Yin and Yang eyes. People with Yin and Yang eyes are generally light in their horoscopes, that is, the five elements in their fortunes are mostly Yin. In a person's life, the horoscopes start at the age of ten, so children The horoscope does not work before the age of 9, so it belongs to yin. Therefore, it is also said in legend that children can easily see some things in the spiritual world. This is where the saying "child's eyes" comes from. The yang energy of a person who is about to die is about to dissipate, and the yin energy gathers. , so you can also see those things.
First of all, ask the person in your village to go to a psychiatric department for examination. If there is no mental problem, you might as well find the answer from what I explained above.