In Chinese Esoteric Buddhism, Cundi practice is quite widely known and practised. One of its features that is particularly appealing to some is it does not require the practitioner to refrain from eating meat and eggs, eating the five pungent vegetables, drinking alcohol, having a sexual relationship, etc. for it to be effective.
From what I know, proper Esoteric Cundi practice is best initiated and taught by a teacher with lineage. Proper practice requires things such as a special mirror, mandala, etc.
Of course, one may simply recite the mantra without the most proper Esoteric practice.
However, I am refering to the Sadhana written by Nan Huai Chin, and not the Sutra itself.
I want to know if the Mantras other than the Cundi Mantra in the Sadhana (preliminary chanting, post-mantra recitation, etc) are legitimate, 'orthodox' Buddhist mantras, and not (newly) created ones that modern schools (ex. True Buddha School, etc) fabricated...