According to the most ancient Bonpo texts, Don-pa Shen-rab, forefather of Bon religion, descended from heaven on the sacred Mt. Gang-rin-po-che. Today, in front of the sacred Mt. Kailas, there lies a mysterious triangular area composed of Chos-lung, rGya-nyi-ma and Mon-rtsher (the sources of the Elephant-like River), where stands the only surviving monastery of Bon religion in mNgav-ris. bsTan-vdzin-dbang-grags Rin-po-che, who enjoys the highest position in Bon religion, acts as both abbot of the monastery and president of mNgav-ris Tibetan Medicine Hospital.
    It is believed that bsTan-vdzin-dbang-grags holds two keys in his mysterious yet chaotic mind. One is to find the distant and mysterious history of Bon religion, the other serves to search for the secrets of the remote Zhang-zhung civilization.
    However, in fact, the author tells us that bsTan-vdzin-dbang-grags still keeps another key in his hand, that is, the key to find the clue of mysterious history of Tibetan medicine.