The seventeenth category is Knowledge of the Five Preliminary Grades of Disciples of the Perfect Teaching (Yüan-chiao Wu-p ‘in Ti-tzu Chih). This category of knowledge is related to the Five Preliminary Grades of Disciples of the Perfect Teaching and indicates initial level of practice that belongs to the Perfect Teaching. Although this level is equivalent to the Ordinary Rank of a Lower Level of the Tripiṭaka Teaching, the Stage of Dry Wisdom of the Common Teaching, and the Ten Faiths of the Separate Teaching, it is actually superior to that of the other three teachings. This is because the starting point of the Perfect Teaching is higher, as its practice is based on the contemplation of the Middle Way, in which the Threefold Truth is simultaneously and perfectly perceived. One can directly penetrate the Ultimate Truth that consists of emptiness, the provisional and the middle without having to gradually progress to contemplate each of the three truths. Thus, the practitioners, even at the beginning stage of practice, is able to eliminate delusions of false ideas, to subdue delusions of wrong attitudes, delusions of lacking sufficient knowledge of saving beings, as well as fundamental ignorance. (Vol. 2, Page 141)