hoping to visit xian in september, what is the weather like then and how many days do I need to see the terracotta army and the Great Wall?

In September, Xi'an has an average temperature of around 15-25℃, with cool and pleasant weather and occasional autumn rain. It is recommended to bring a long-sleeved jacket. Visiting the Terracotta Warriors takes a full day (including 1.5 hours of round-trip travel time and 3-5 hours of visiting). The Xi'an City Wall can be scheduled for half a day (1-2 hours for cycling or walking). If you only plan to visit these two sites, two days are sufficient. If you want to deeply experience urban attractions such as the Bell and Drum Towers and Muslim Quarter, it is recommended to set aside three days.