We went to Xian, China in June 2013. It's about an hour and 15 minute flight from Beijing. It was hot, mid 90s, but felt dry, so it wasn't too bad. Xian
is one of the oldest cities in China and has a lot of history. We went to see the terracotta warriors as a day trip. Planning to fly out in the morning and fly back in the evening. We hired a driver to pick us up from the airport and drive us to the various locations. Once we arrived at the location of the warriors (about an hour drive from airport), there are several English speaking guides available for hire. I highly suggest doing so. I want to say the guide was around $40.
There are 3 pits they have made available to the public. There first pit is the largest. Every single soldier, officer and horse are unique.