One of the most famous sights in China, the Terracotta Army in Xi’an consists of thousands of terracotta figures which are over 2000 years old! They were buried to guard the tomb of the first emperor of China, Qin Shi Huang Di, who is praised as the first emperor to truly unite the whole of China and the founder of the great wall.
So far, three pits have been excavated and visitors are welcome to wander around their perimeter and see the figures close up to admire their impressive detail. Each warrior is unique, and as well as various different army men (generals, crossbowmen, officers, charioteers, etc.) there are also horses and even acrobats.
The terracotta army is definitely a must-visit if you are in Xi’an, and worth a trip from Beijing! Personally, I would recommend combining your trip to the terracotta army with a visit to the Jingdi Tombs located nearby, which also contain many interesting terracotta figurines but much smaller and focussed on agriculture rather than war and conquest.