The concept of Christian Zen first appeared in Jesuit William Johnston's Christian Zen: A Way of Meditation in 1971. Christian Zen does not represent a new of Buddhist maditation, and there is no need for practitioners to give up their own Christian belief. It is a new way for Christians to strengthen their passion for the Lord or God and to help themselves adapt to this global age. This concept Christian Zen is actually an important result of Second Vatican Council, which could benefit the Christian spirituality from Buddhist meditation. It is rooted in the mystical understanding of eastern Zen, first appeared when western missionary learned Buddhism from Japanese masters. Then buddhist subjectivity in modern society often presents itself in various religious dialogues, and actively engaging into worldly affairs, which is called Engaged Buddhism.