Photo shows a pile of mani stones in Sede Township of Hongyuan County, Ngapa Tibetan-Qiang Autonomous Prefecture of Sichuan Provinces. Mani stones refer to the stones engraved with the six-syllable prayer word "om mani padme hum". In 1920s, the ancestors of local residents migrated from north of Kham to the county, the former of which is a thousand miles away from the latter. The mani stones there, piled up by over 100,000 pieces, are not only a tourist magnet but also of great historic significance to investigate the local civilization. [Photo/Chinanews.com]

Photo shows a pile of mani stones in Sede Township of Hongyuan County, Ngapa Tibetan-Qiang Autonomous Prefecture of Sichuan Provinces. Mani stones refer to the stones engraved with the six-syllable prayer word "om mani padme hum". In 1920s, the ancestors of local residents migrated from north of Kham to the county, the former of which is a thousand miles away from the latter. The mani stones there, piled up by over 100,000 pieces, are not only a tourist magnet but also of great historic significance to investigate the local civilization. [Photo/Chinanews.com]

Photo shows a pile of mani stones in Sede Township of Hongyuan County, Ngapa Tibetan-Qiang Autonomous Prefecture of Sichuan Provinces. Mani stones refer to the stones engraved with the six-syllable prayer word "om mani padme hum". In 1920s, the ancestors of local residents migrated from north of Kham to the county, the former of which is a thousand miles away from the latter. The mani stones there, piled up by over 100,000 pieces, are not only a tourist magnet but also of great historic significance to investigate the local civilization. [Photo/Chinanews.com]

Photo shows a pile of mani stones in Sede Township of Hongyuan County, Ngapa Tibetan-Qiang Autonomous Prefecture of Sichuan Provinces. Mani stones refer to the stones engraved with the six-syllable prayer word "om mani padme hum". In 1920s, the ancestors of local residents migrated from north of Kham to the county, the former of which is a thousand miles away from the latter. The mani stones there, piled up by over 100,000 pieces, are not only a tourist magnet but also of great historic significance to investigate the local civilization. [Photo/Chinanews.com]

Photo shows a pile of mani stones in Sede Township of Hongyuan County, Ngapa Tibetan-Qiang Autonomous Prefecture of Sichuan Provinces. Mani stones refer to the stones engraved with the six-syllable prayer word "om mani padme hum". In 1920s, the ancestors of local residents migrated from north of Kham to the county, the former of which is a thousand miles away from the latter. The mani stones there, piled up by over 100,000 pieces, are not only a tourist magnet but also of great historic significance to investigate the local civilization. [Photo/Chinanews.com]

Photo shows a pile of mani stones in Sede Township of Hongyuan County, Ngapa Tibetan-Qiang Autonomous Prefecture of Sichuan Provinces. Mani stones refer to the stones engraved with the six-syllable prayer word "om mani padme hum". In 1920s, the ancestors of local residents migrated from north of Kham to the county, the former of which is a thousand miles away from the latter. The mani stones there, piled up by over 100,000 pieces, are not only a tourist magnet but also of great historic significance to investigate the local civilization. [Photo/Chinanews.com]