The Mahayana is more of an umbrella body for a great variety of schools, from the Tantra school (the secret teaching of Yoga) well represented in Tibet and Nepal to the Pure Land sect, whose essential teaching is that salvation can be attained only through absolute trust in the saving power of Amitabha, longing to be reborn in his paradise through his grace, which are found in China, Korea and Japan. Ch’an and Zen Buddhism, of China and Japan, are meditation schools. According to these schools, to look inward and not to look outwards is the only way to achieve enlightenment, which to the human mind is ultimately the same as Buddhahood. In this system, the emphasis is upon ‘intuition’, its peculiarity being that it has no words in which to express itself at all, so it does this in symbols and images. In the course of time this system developed its philosophy of intuition to such a degree that it remains unique to this day.