The formation of Buddhist relics has long been a mystery, sparking endless debates among Buddhist scholars, medical experts, and biologists for centuries. According to legend, after the Buddha Shakyamuni's passing, his body was cremated, resulting in relics that were divided into three parts: one ascended to heaven, another entered the dragon palace, and the last remained on earth. In China, relics such as the Buddha's finger and tooth are preserved in places like Fufeng, Shaanxi, and Beijing. However, the exact process of how these relics form remains a topic of contention.

One perspective suggests that relics are the result of prolonged practice of Qigong, achieving a high degree of integration of body and mind, leading to a transformation of vital energy. However, this claim lacks supporting evidence, as there has never been a documented case of someone producing relics through cremation after practicing Qigong. Another theory posits that relics are actually calcifications in the body, particularly kidney stones or gallstones. Yet, this conclusion is also questioned, as seen in the case of Master Baoxian, whose health status regarding stones is unknown.

Additionally, some traditional Chinese medicine practitioners propose that the formation of relics may be related to long-term meditation and vegetarianism. However, actual cases do not support this idea, as some long-term vegetarians and meditators have not produced relics. Buddhist texts offer various interpretations of the formation of relics, suggesting that they are the result of boundless precepts, concentration, and wisdom, representing a crystallization of the body with sacred and mysterious significance.

To this day, there is no reliable scientific explanation for the formation of relics, necessitating collaborative research from the fields of medicine, biology, and Buddhism to uncover the secrets behind them.