This book is a collection of Nai Xia quintessential works on Silk Road studies. A key resource in the field of Silk Road Archaeology, it features in-depth content, a broad range of material, careful textual research, and meticulous analysis. With thorough investigations of foreign coinage, silk textiles, and artifacts with foreign styles excavated in different parts of China, it explores the exchange between ancient China and Central Asia, Western Asia, and Europe. In particular, this book provides detailed descriptions of the economic and cultural ties between ancient China, Pre-Islamic Arabia, the Sasanian Empire, and the Byzantine Empire. The research propounds innovative theories on the history and evolution of East-West transportation routes, i.e., the overland Silk Road and the Maritime Silk Road. Based on the study of ancient relics and excavated artifacts, it points out that cultural exchange along the Silk Road was never unilateral, but instead, mutual influence and cooperation were obvious. Since ancient times, countries along the Silk Road have had a tradition of amicable foreign relations and the promotion of common interests. The book is intended for academics, scholars and researchers.