This study is based on a Sino-Tibetan manuscript from the late 960s, carried by a Chinese pilgrim through the Hexi corridor on his way from Wutaishan to India. Included is a series of Tibetan letters of introduction that functioned as a passport as the monk stopped in monasteries on his way. The manuscript is a unique contemporarytestimony of the large pilgrimage movement known from historical sources. It also provides evidence for the high degree of ethnic, cultural and linguistic diversity in Western China during this period.