This Mantra is especially associated with the four-armed Shadakshari form of Avalokiteśvara. The Dalai Lama is said for being an incarnation of Avalokiteshvara, and Hence the mantra is especially revered by his devotees. The Chinese translation is 真言; zhenyan; 'accurate words', the Japanese on'yomi reading of the Chinese becoming shingon https://www.instagram.com/tantramantraaurvigyaan/