The historical facts of Xuanzang's westward journey and Jian Zhen's eastward journey fully reflect the characteristics of foreign exchanges in the Tang Dynasty: (1) high prosperity and peace; (2) open

The historical facts of Xuanzang's westward journey and Jian Zhen's eastward journey fully reflect the characteristics of foreign exchanges in the Tang Dynasty: (1) high prosperity and peace; (2) opening up. B

Examination analysis: According to the knowledge learned, the characteristics of foreign exchange in Tang Dynasty can be summarized as opening to the outside world and two-way communication. Since the Tang Dynasty, there have been extensive contacts. During the Sui and Tang Dynasties, countries that had contacts with foreign countries were distributed in East Asia, Southeast Asia, South Asia, Central Asia, West Asia, Europe and Africa. The scope is wide and the history is rare. For example, Japan sent envoys to the Tang Dynasty for thirteen times in a row. China mainly spread system, culture and production technology, which promoted the historical development and social progress of all countries. Native products, species, art and Buddhism introduced from abroad enriched the social life of the Tang Dynasty. So choose item B.

Comments: The development of foreign relations in the Tang Dynasty made the politics, economy and culture of the Tang Dynasty have an important influence in the world and promoted the civilization progress in Asia and even the world. At the same time, through foreign exchanges, the Tang Dynasty learned the most advanced culture and science and technology in the world at that time, which further promoted the economic and cultural prosperity of the Tang Dynasty and enriched the people's economic and cultural life.