Chinul, a 12th-century Korean Seon learn, emphasised that Perception into our legitimate nature is sudden, but is always to be accompanied by exercise to ripen the Perception and attain complete Buddhahood. The modern Korean Seon master Seongcheol opposed this, emphasizing "sudden enlightenment, sudden cultivation". Awakening Mind is usually a foundation https://un-curso-en-milagros.org/recursos/videos/