Zen Teaching of Instantaneous Awakening: being the teaching of the Zen Master Hui Hai, known as the Great Pearl

Zen teaching of instantaneous awakening: A complete translation of the teaching of the Chinese Ch'an Master Hui Hai by John Blofeld, with a foreword by Charles Luk
This eighth-century classic is a complete translation of Hui Hai’s teachings.
Hui Hai, was one of the great Ch'an (Zen) Masters. He was a contemporary of both Ma Tsu and Huang Po, those early masters who established Ch'an after the death of Hui Neng, the sixth Patriarch.
Hui Hai's direct teachings point immediately to this moment of truth and awakening, and the message of this classic eighth-century text is universal and timeless.