Orientalia Gandensia, Vol VIII, The Chinese Hevajratantra

The Chinese Hevajratantra: The Scriptural Text of the Ritual of the Great King of the Teaching, the Adamantine One with Great Compassion and Knowledge of the Void.
The Hevajrantra, the well-known Anuttarayogatantra, about `unsurpassed yoga`, is a direct successor of the Tattvasamgraha, a yogatantra. It was translated from Sanskrit into Chinese in the 11th century. The Chinese translators offer a text which remains true to its contents, but which is at the same time acceptable to the Chinese milieu of the 11th century. This diplomatic effort explains many discrepancies, which were no problem to the initiate.