The "Big Red Gate" - yes, that's what it's called. The large number of people approaching are from Crystal Cruises tour. What surprised me about Crystal is that in China, they seemed to be mass herding their passengers. Everyone came and went at the same time. Viking River Cruises, on the other hand, staggered their groups so no more than 1-2 busses arrived at a site at any given time. Crystal moved 10+ busses together. Felt that was a bit odd for this Luxury line which usually is all about personal service. Not sure if it's the local company they're using or something else, but was not impressed with the way it was handled - they overwhelmed each site when they arrived. Also, no individual tour guides with each group, so they just walked along without getting any info.