On the occasion of the 50th anniversary of the establishment of the Tibet autonomous region, the Qinghai-Tibet Railway has also been wholly opened to traffic for nine years. As the longest railway with the highest altitude in the world, what has it contributed to the development of Tibet?
Namtso Holy Lake: World's highest salt water lake with an elevation of 4,718 meters. The Epic of King Gesar: The world's longest epic. Yigong Farm: World's highest tea farm with an elevation of 2,240 meters.
As the "four greatest mysteries in the world", the savage in Tibet has provoked much discussion.
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