The Bulssi Jap-Byeon is a late 14th century Korean Neo-Confucian polemical critique of Buddhism by Jeong Dojeon (pen name: Sambong 三峰1342-1398). In this work he carried out his most comprehensive refutation of Buddhism, singling out Buddhist doctrines and practices for detailed criticism.
According to Jeong, stated that this book was written with the objective of refuting Buddhism once and for all "lest it destroy morality and eventually humanity itself." The charges leveled against Buddhism in the Bulssi japbyeon constitute a full inventory of the various arguments made by Confucians and Neo-Confucians from the time of the introduction of Buddhism into East Asia during the second century C.E. These arguments are arranged in eighteen sections, each of which is a critique on a particular aspect of Buddhist doctrine or practice.