Dunjiao

dunjiao (J. tongyō; K. ton’gyo 頓教) is a Chinese term that is translated as “sudden teachings,” “subitism,” etc.

According to the Princeton Dictionary

[Dunjiao is] a polemical term used by Heze Shenhui in the so-called “Southern school” (Nan zong) of Chan to disparage his rival “Northern school” (Bei zong) as a gradualist, and therefore inferior, presentation of Chan teachings and practice.

Sources

• Buswell, Robert E.; Lopez, Donald S. (2014), The Princeton Dictionary of Buddhism, Princeton University