<P> Formal Hua Tou practice was promoted in Korea by Seon master Chinul . He was extremely successful in popularizing Hua Tou . According to Robert Buswell: </P> <P> Hwadu is the predominant technique cultivated in (Korean) meditation halls, and almost all masters advocate its use for students at all levels . </P> <P> According to Bhikkhu Analayo, a similar practice is found in the Pali commentaries relating to mindfulness of bodily postures . Analayo writes that according to the Papañcasudani "the difference between simple walking and walking meditation as a Satipatthana is that a meditator keeps in mind the question: "Who goes? Whose is this going?" (Ps I 251). </P> <P> Dahui emphasised that initial insight is essential for Zen - training . Dahui stressed that it was possible for laymen to achieve enlightenment through this practice . He often gave instructions through letters to his pupils . </P>

Who is it that carries this corpse around