Kālangi Nāthar was born in Kaśi (Benares). He attained the immortal state of swarūpa samādhi at the ago of 315, and then made China the center of his teaching activities. He belonged to the ancient tradition of Nava (nine) Nāth sadhus (holy ascetics), tracing their tradition to Lord Shiva. There are nine important shrines associated with this tradition, five of which are in the Himālaya Mountains: Amarnāth (where Shiva first taught Kriya Yoga to his Shakti partner, Parvati Devi), Kedarnāth, Badrināth (India), Kailāsanāth, (Tibet) and Paśupatināth (Nepal).
Notes and references:http://palani.org/bhogar-biography.htm