Xuzhou Aquatic Terracotta Warrior Museum , with scenic beauty, is located in the western pond of the cultural site of Han Dynasty. After excavated in 1987, the northern two cavalry figure pits were immersed in water. In order to show the complete picture of the terracotta warriors and horses in Xuzhou , the municipal government of the city of Xuzhou decided to set up Aquatic Terracotta Warrior Museum in 2005. This museum was accomplished and open to the public in April 30, 2006 .
The No.5 pit in form with 13.5m long and 3.5m wide is 0.5m deep in the eastern part as well as 0.7m deep in the western part. Most terracotta statues were buried in the pit before taking shape. Terracotta horses, cavalry figures and some building materials of Han Dynasty were unearthed.
The cavalry figure pit group is an important part of the Han Dynasty terracotta warriors and horses in Xuzhou , which are arranged in battle formation into northern and southern groups. About 125m north to the southern group, the northern cavalry formation includes one cavalry figure pit and one terracotta horse pit. The two pits are all rectangular. The western pit is marked as No.5 and the eastern one is marked as No.6.
The cavalry figure pits are higher in the east and lower in the west. Because of high position, the No.6 pit was damaged seriously in early time. The No.5 pit was in good condition when it was discovered in 1985, but later immersed in water. The pond was dry up in 1987, then Xuzhou Han Terracotta Warrior Museum excavated the No.5 pit and took out the figures. After that, the pits were immersed in water again.
When the cavalry figure pit was excavated, most figures were not assembled. Piles of different parts of the horses were placed everywhere in disorder.
According to the archeological excavating and restoring, three kinds of terracotta statues were buried in the pits, including terracotta horse, lightly equipped cavalry figure and heavily equipped cavalry figure.
Famous for its fast speed and bravery, cavalry is one important combat branch of ancient army. Cavalry sprung up and developed quickly in warring states period. Cavalry was the decisive military power when Qin Shi Huang unified the country, and became one independent arms of services.
The cavalry figure pit group is an important part of the Han Dynasty terracotta warriors and horses in Xuzhou . The unearthed cavalry formation proves that cavalry had become one independent arms of the service in early Western Han Dynasty. So the excavation has remarkable significance in study of the army's developing course in ancient China .