Photo shows Jana Mani Heap, the largest pile of the Mani stones in the world in Yushu Tibetan autonomous prefecture in Qinghai province. Mani stone refers to the stone engraved with Buddhism scriptures or the portraits of deity, and is regarded as the eternal belief engraved in stones.[Photo/China News Service]

Craftsmen carve mantras on stones in Yushu Tibetan autonomous prefecture in Qinghai province. [Photo/China News Service]

Craftsmen carve mantras on stones in Yushu Tibetan autonomous prefecture in Qinghai province. [Photo/China News Service]