Kundalini Yoga is influenced by Shaktism and Tantra schools of Hinduism. The tantra yoga practices include asanas and breathing exercises. Shiva is also mentioned in Buddhist Tantra. Mantras are central to the practice of Buddhist tantra. Bhairavi is also a title for a female adept in Kundalini, Tantra. Jeffrey J. Kripal argued that Ramakrishna rejected Advaita Vedanta in favour of Shakti Tantra. Ramakrishna's religious practice and worldview, contained elements of Bhakti, Tantra and Vedanta. The Indian form of Buddhist tantra (Vajrayana) reached China in the 7th century. Kalki is also found in Buddhist texts, such as "Kalachakra Tantra". They are also a key part of Anuttarayoga Tantra meditation practices. Mantras serve a central role in tantra. Hindu temple building also generally conforms to the iconography of tantra. In it he elucidated topics such as sexual transmutation, "white tantra", and esoteric initiation. German courts have made tantra massage teaching taxable. A yogini is a student of Tantra or an aspirant.