Ancient Yazhou City is Yacheng Town, Sanya City of today. It is an important market place of the "south-to-north transition of vegetables" project and it is also a well known production base of seasonal fruit and vegetables in the south of China. In the South and North Dynasty a shire was established here for governance, and the administration of state, shire or county has been based here by all dynasties ever since the Song Dynasty.
The ancient Yazhou City has a long history and has many scenic spots. Before the Ning Dynasty, this ancient city was an earth city. Brick walls started to be built in the fourth year of the Qingyuan Period of the Southern Ning Dynasty. It became a relatively large city of Hainan Island after three expansions in the Yuan Dynasty, Ming Dynasty and Qing Dynasty. Since the Tang Dynasty, several officials and celebrities have been circumvented by treacherous court officials and exiled to ancient Yazhou City. There were as many as fourteen officials, only counting the ones with a position above vice prime minister (in feudal China), including Wei Zhiyi and Tang Yuan of the Tang Dynasty, Ding Wei, Zhao Ding, Lu Duoxun and Hu Quan of the Ning Dynasty, Wang Shixi of the Yuan Dynasty and Wang Ge and Zhao Qian of the Ming Dynasty. As a result, Yazhou City is also called the "Home of Anchorets".
When Monk Jianzhen, a famous monk of the Tang Dyansty, was hit by typhoon on his fifth sailing to Japan in the seventh year of the Tianbao Period of the Tang Dynasty, his ship ended up at Yazhou City. There Jianzhen helped to build the Great Cloudy Temple. He had a great number of Buddhist classics that he prepared to take to Japan. This became a colorful part of the history of Yazhou culture. The legendary Huang Daopo, a female cotton spinning revolutionist of the Yuan Dynasty, also lived in Shuinan Village of Yazhou City for nearly forty years.
The city gate of Yazhou City has been repaired completely and looks new and magnificent, attracting large numbers of tourists from home and abroad. There is also another world famous scenic spot: the Big and Small Cave. Its shape is like a huge turtle that stands by the sea and surrounding this scenic spot are beautiful tree clad mountains of various heights. The shape of the mountains and stones are very unusual and special. The green trees seem particularly vigorous amongst star-like wild licorice and narrow streams. In the Ming Dynasty, the "Mountain Ao
Reading Yard" was established here. The Big and Small Cave is on the coast at the south western foot of Aomen.
What makes this place especially amazing are two pools close to each other, the Jade Wall Hot Springs. In the past, one pool had half warm and half cold water, while the other one was full of hot water. However, the warm water cooled down and the boiling water became warm, just the right temperature for a bath. In the Zhengde Period of the Ming Dynasty a stone wall was built to protect the hot spring, but it collapsed as time passed by. In the fifteenth year of the Guangxu Period of the Qing Dynasty, Tang Yiyuan of Zhizhou resorted to reconstruction and established the Jiji Pavilion. Although the pavilion was destroyed, the hot spring still exists and is as clean as a mirror, suitable for bathing all year long.