I am sure some experts in here will have some ideas. Basically I have about 50K avios with BA and I am looking to fly from Bangkok to somewhere in China that is not Beijing or Shanghai. I have been wanting to go to Xian but not sure if it is possible with the avios. Searched on Cathay Pacific, it says it flies there through Dragon Air though.

Or if you have a different destination, please recommend. The time would be in June-July frame.

Thanks.