I and my husband went to Xi'an in December 2018. We had joined Lily Sun's Private Tour for about 3-4 days and the experience we had encountered was great. Everything from services to the variety of places we visited was just great. The transportation used was also very clean. Our tour guide, Michael, was bery pleasant and helpful. He speaks fluent English and quite friendly as well. I would strongly recommend this travel agent to any new-comers who wish to explore Xian and its surrounding places.