"Antiseptic Gel is a Must" Xi'an Packing List Tip by jcsleal
Xi'an What to Pack: 11 reviews and 7 photos
Toiletries and Medical Supplies: I don't have much to add to the comments already posted.
BUT, consider keeping some antiseptic gel to clean your hands before eating. I haven't seen restaurants with soap available. And people are always handling cash (western credit cards are not accepted in 99.5% of the stores).
Miscellaneous: As I've mentioned, consider bringing cash, instead of relying on your credit cards. Visa/Mastercard/Amex are not accepted in most of Xi'an stores, markets or restaurants. Traveller Checks are a lot safer and can be exchanged at any Bank of China branch.