The image is a photograph of a plaque on a stone wall. The plaque is rectangular in shape and has a black background with white text. The text is written in a serif font and is centered on the plaque. Below the text, there is a paragraph that reads "Preface: Contact between the East and the West started from very early days and continued all the time. Wudi Emperor of the Han Dynasty dispatched Zhang Qian, an envoy to the Western Region in the 2nd century B.C. and thus opened a trading road and also a cultural corridor for the silk trade across Asia, Africa and Europe from Chang'an to Rome. The real communication in Asia and Europe began breaking through the geographical barrier, enriching the development of the world civilization. This road was first named as Silk Road by German geographer F. von Richthofen in 1870s. Gansu province, located in the eastern part of the Silk Road, was the front door of China opened to the West, the major channel and one of the most active regions of the communication between the West and East. The opening and development of Silk Road cultural mingle and collision left numerous historical and cultural treasures presenting the resurgence of the ancient civilization."