If you travel to a Chinese city,do you want to have a free guide?What do you want to know?

I am going to be a volunteering English tour guide during this summer vacation ,and introduce my hometown to foreign tourist.I want to get your suggestions about this——if you travel to a northern Chinses city(Da Tong in Shanxi province)which has a colorful history and remains many ancient constructions ,what do you want know?What kind of transportation do you prefer?bus, taxi ,bus or walk?THANK YOU FOR YOUR ANSWER AND WELCOME  TO Da  Tong*^_^*