Hannelore Mueller, introduced 1981 into the continuous practise of Zen by P. Lutze SJ., Philipp Kapleau (Rochester N.Y.) and P.E.M. Lasalle SJ. Since 1983 under the guidance of P. Willigis Jaeger Kyô-un Roshi who led her to Sanbô-Zen 2006.
2009 Teacher of ‘Empty Cloud’ (W. Jaeger)
2012 Teacher of Sanbô-Zen (Ryô-un Yamada) with the name Yû-un an.
Working as a physician (general practitioner, trad. chines. med.) and as psychotherapist/ -analyst in her own office. Member of C.G. Jung Society and Teacher of the Medical Society for Qigong Yangsheng Prof. J. Guorui.