The hostal is the biggest gain in my trip in xi'an.

The youth hostal sever room for the people who are from all over the world and the cheapest price is only 40 for one night, the hostal also organizes some free party to spread chinese culture and improve the relationship between the guys who don't know each other before the came to the hostal.

Another way you can live in a cheap room is to rent an apartment on the internet, it's very famous in china to rent an apartment for your short-time journey, the fee will be 90-120 for one day and the apartment will about 50 square meter with a washroom, TV, sofa, and maby a kitchen.