Southwest road passes through Xichuan to Tubo and reaches Nepal and India; Or through Nanzhao and Myanmar to India. East to Hebei and Liaodong, to the Korean peninsula.
maritime traffic
In terms of shipping, there are three ways to go to Japan: one is from Dengzhou (Penglai, Shandong Province), crossing the Bohai Sea to Japan along the east coast of Liaodong Peninsula and the west coast of Korean Peninsula; the other is from Chuzhou (Huai 'an, Jiangsu Province), crossing the Yellow Sea to Japan along Shandong Peninsula; The third is to set sail from Yangzhou or Mingzhou and cross the East China Sea to Japan.
The sea route to South Asian countries runs from Guangzhou via the coast of Vietnam, through the Straits of Malacca at the southern tip of Malay Peninsula, to Sumatra, and then to Java, Sri Lanka and India in Indonesia. The sea route to West Asia mainly starts from Guangzhou, passes through Southeast Asia, crosses the Indian Ocean and the Arabian Sea, and reaches the Persian Gulf coast.
During the Tang Dynasty, maritime traffic to Egypt and East Africa was initially opened. These traffic lines are constantly confirmed by unearthed cultural relics and sunken ships along the route. The above facts show that China in the Tang Dynasty was the center of economic and cultural exchanges between Asian and African countries.
Japan's "envoy to Tang Dynasty"
During the Tang Dynasty, the friendly exchanges and cultural exchanges between China and Japan reached an unprecedented period of prosperity. At this time, Japanese society was in the stage of the disintegration of slavery and the establishment and consolidation of feudalism, and greatly appreciated the prosperity of the Tang Dynasty. Therefore, a large number of envoys, overseas students and monks were sent to the Tang Dynasty.