摘要
Tibet is not only the origin of rivers,the source of ecology in South and Southeast Asia,but also an initiator and a conditioning zone for the Chinese and even the climate of the Eastern Hemisphere,thus honored as the last pure land in the world.Tibet is known as grand,magnificent,pure and mysterious,
Tibet is not only the origin of rivers, the source of ecology in South and Southeast Asia, but also an initiator and a conditioning zone for the Chinese and even the climate of the Eastern Hemisphere, thus honored as the last pure land in the world.
