Yazhou Bay, located southwest of Sanya City, is an important historical and cultural site. Serving as a trading gate at the southernmost tip of China, Yazhou Bay was an important port for the Maritime Silk Road in ancient times.
During the Tang Dynasty, Chinese Monk Jianzhen helped to introduce Buddhism to Japan. In his fifth attempt, his ship ran into storms and drifted far off course down to Hainan. Jianzhen was then forced to make his way back to Yangzhou Bay by land, lecturing at a number of monasteries on the way.