Korean Seon, also known as Korean Zen, is a form of Buddhist practice that originated in China and was later brought to Korea in the 7th century. It emphasizes the direct experience of awakening and the realization of one's true nature. The main principles of Korean Seon can be summarized as follows:

1. Non-duality: One of the core principles of Korean Seon is the understanding of non-duality, which means that there is no separation between the self and the world. This concept is based on the Buddhist teaching of emptiness, which states that all phenomena are empty of inherent existence and are interdependent. In Korean Seon, practitioners strive to transcend the dualistic view of self and other, and instead, experience the interconnectedness of all things.

2. Mindfulness: Another important principle of Korean Seon is mindfulness, which is the practice of being fully present in the moment and aware of one's thoughts, feelings, and surroundings. In Korean Seon, mindfulness is cultivated through various techniques such as meditation, breath awareness, and daily activities. By being mindful, practitioners can develop a deeper understanding of the nature of reality and their own minds.

3. Emptiness: Emptiness is a central concept in Korean Seon, and it refers to the understanding that all phenomena are empty of inherent existence. This means that everything is impermanent and constantly changing, and there is no fixed or permanent self. By realizing the emptiness of all things, practitioners can let go of attachments and delusions, and experience a sense of freedom and liberation.

4. Direct experience: Korean Seon emphasizes the direct experience of awakening, rather than relying on scriptures or intellectual understanding. This means that practitioners must personally experience the truth for themselves through meditation and other practices. In Korean Seon, the teacher-student relationship is crucial, as the teacher guides the student in their practice and helps them to deepen their understanding through direct experience.

5. Everyday life practice: Korean Seon emphasizes the integration of practice into everyday life. This means that practitioners are encouraged to apply the principles of mindfulness, non-duality, and emptiness in their daily activities, such as eating, walking, and working. By doing so, they can cultivate a deeper understanding of the nature of reality and their own minds in all aspects of their lives.

In conclusion, the main principles of Korean Seon revolve around the understanding of non-duality, mindfulness, emptiness, direct experience, and everyday life practice. By incorporating these principles into their practice, practitioners can deepen their understanding and experience of awakening and ultimately realize their true nature.