8th century in Tibet

stone pillar dating to c 764 CE and inscribed with what may be the oldest known example of Tibetan writing

The Mahāvyutpatti (Devanagari: महाव्युत्पत्ति, compound of महत् (in compounds often महा) - great, big, and व्युत्पत्ति f. - science, formation of words, etymology; Wylie: Bye-brag-tu rtogs-par byed-pa chen-po), The Great Volume of Precise Understanding or Essential Etymology, was compiled in Tibet during the late eighth to early ninth centuries CE, providing a dictionary composed of thousands of Sanskrit and Tibetan terms designed as means to provide standardised Buddhist texts in Tibetan, and is included as part of the Tibetan Tengyur (Toh. 4346). It is the earliest substantial bilingual dict

peace treaty between China and Tibet about the Silk Road, signed on 783