Which is better, Xi 'an cheap homestay or hotel chain?

It depends mainly on your needs. If you just want to find a place to rest, then a hotel is definitely more suitable. If you want to find a well-equipped room, it is more appropriate to stay in B&B. Last time I booked Xi 'an's cheap B&B on Wooden Bird B&B, the price was not much different from that of the hotel, and the facilities were more comprehensive than the hotel. At present, the number of people scheduled by B&B is probably just that the industry has not yet developed.