cope
Look at the Beijing#Cope notes as they apply to Xi'an, too. Most importantly, take paper tissue with you to toilets.
Generally, Western style accommodation will have western toilets, whereas the very inexpensive guest house zhao dai suo will usually have squat toilets. If you need to use western toilets, learn to plan your day accordingly. Major tourist attractions will have western toilets.
If you arrive in Xi'an by train, try not to be overwhelmed when you exit Xi'an's train station. There are usually aggressive hotel touts looking for customers. Just insist that you already have a place to stay and tell them no, with a serious faced, ä¸è¦ï¼ / Bú yà oï¼
It is a good idea to leave your bags at the left luggage office and then go into town to look for accommodation. This way you will not be overwhelmed by the burden of carrying your heavy bags or luggage around.
