In Xi’an, there is a huge 700- year-old wall around the city called Chengqiang. You can walk or ride a bike on the wall. Besides, Xi’an has other famous places like the Museum of the Terracotta Army. It has a terracotta army with more than 8,000 soldiers. “Terracotta” is an Italian word. It means “cooked earth”. The terracotta army is more than 2,000 years old! The museum is about 40 kilometers away from the city center. You can take a train there.