Ootengu, also known as Âm Dương Sư in Vietnam, is a term used to describe malevolent or mischievous spirits found in Japanese folklore. These beings are often depicted as monstrous creatures with supernatural powers, capable of causing chaos and disrupting the natural order. In Vietnamese culture, the concept of Ootengu has evolved into a belief system that combines elements of shamanism and animism. Shamanism, or Âm Dương in Vietnam, is a practice rooted in the belief that spirits or ancestor spirits can communicate with the living world. The role of the shaman, or someone who practices this art, is to act as an intermediary between the physical and spiritual realms. Ootengu, being part of this broader belief system, are often seen as powerful entities that can be either beneficial or harmful, depending on their intentions. One of the most famous stories involving Ootengu in Vietnamese folklore involves a shaman who encounters these spirits during their journey to the underworld. This story highlights the complex relationship between humans and Ootengu, where both fear and respect play significant roles. The legend also emphasizes the importance of maintaining harmony with nature and the spiritual world. In modern times, the concept of Ootengu has reemerged in Vietnamese culture, often used as a metaphor for psychological or emotional struggles. People may refer to difficult experiences as being "attacked" by Ootengu, symbolizing the internal conflict or chaos that they face. This interpretation ties the ancient belief system to contemporary issues, making it more relatable to modern audiences. Moreover, the practice of shamanism in Vietnam has seen a resurgence, with many people seeking guidance from shamans who claim to communicate with Ootengu and other spirits. These practices are often used to find solutions for personal problems, whether they are emotional, psychological, or even physical in nature. The connection between Ootengu and Âm Dương Sư reflects the rich tapestry of beliefs that have shaped Vietnamese culture over centuries. By understanding these traditions, we gain insight into the spiritual and cultural values of a society that continues to honor its ancient roots while adapting to the challenges of modern life.