In 1929 the Karate Study Group of Keio University (Instructor Gichin Funakoshi) used this term in reference to the concept of emptiness in the Heart Sutra, and this terminology was later popularized, especially in Tokyo. There is also a theory that the background for this name change was the worsening of Japan-China relations at the time.
In 1929 the Karate Study Group of Keio University (Instructor Gichin Funakoshi) used this term in reference to the concept of emptiness in the Heart Sutra, and this terminology was later popularized, especially in Tokyo. There is also a theory that the background for this name change was the worsening of Japan-China relations at the time.