In the 1980s, Italian President Pertini received a letter seeking help. The letter described a middle-aged couple with a 16-year-old son named Subino, who was introverted but possessed an incredible ability—he could ignite objects. One day, while waiting for treatment at the dentist's office, a magazine spontaneously caught fire; later, at home, his bed inexplicably ignited. Despite numerous examinations, many renowned doctors could not explain this phenomenon.

Some suggested that Subino might generate an unusually strong magnetic field within his body, causing objects to ignite. Others believed that his introverted nature and past frustrations could lead to this phenomenon as an unusual expression of his emotions. However, these explanations seemed far-fetched and hard to accept.

Meanwhile, a similar case emerged in Macau. A printer named Li reported that while getting a haircut, the towel around his neck suddenly emitted black smoke, resulting in skin burns. He described this phenomenon as having occurred multiple times, particularly in dry weather, and sometimes accompanied by a strong stinging sensation.

News media worldwide report incidents of human spontaneous combustion every year. Some speculate that this might be related to the powerful electrical energy carried within the body. However, the reason this phenomenon does not occur frequently, and sometimes not at all in certain years, remains an unsolved mystery.

What is the secret behind this mysterious internal flame in humans? Is it a miracle that science cannot explain, or a bizarre phenomenon influenced by psychological factors?