Gold coin introduction: Tian Hong was an important figure in the history of the Northern Zhou Dynasty. He was the general of Zhuguo and the governor of Yuanzhou. The tomb of Tian Hong and his wife was excavated in Dabao Village, Xijiao Township, Guyuan in 1996. Epitaphs, gold coins, pottery figurines, murals, jades, glassware, mica and many other precious relics were unearthed from it, providing a basis for studying his life and achievements. The physical basis enriches the connotation of cultural exchanges and commercial trade between China and the West on the Silk Road.