石头

Year 838 to 842 AD, Tibetan Buddhism in the Tubo Empire faced its greatest persecution in history—the Langdarma Suppression of Buddhism. Tubo nobles allied with the Bon religion to destroy temples, nail down Buddha statues, and burn scriptures. Monks lost their freedom, were enslaved, forced to participate in Bon religious rituals, and massacred. Surviving monks hid "the treasures of Buddhism," calling them "terma."